The Muslim murderer of four US Marines came from an abusive and violent home where his mother was physically and verbally abused by her husband.

Court documents obtained by Daily Mail Online reveal that Muhammad Youssuf Abdulazeez was also victim of beatings by his father that were carried out 'without provocation or justification.'

The Kuwaiti born gunman was caught up in the messy divorce in his senior year at high school in 2009.

The documents reveal that his father Youssuf Saed Abdulazeez also told his wife of 28 years he was going to take a second wife as it was permitted under Islamic law.

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Facade: The shooters mother Rasmia Abdulazeez is second from left in the front row beside her husband Youssuf - but there had in fact been ugly divorce papers. Their murdering son is in orange behind them

Raid: Law enforcement officers detain a woman as they surround a house in Hixson, Tennessee, where gunman Youssef Abdulazeez lived for almost 17 years

Smirking: Muhammad Youssef Abdulazeez, 24, has been identified as the gunman behind a shooting that killed four marines in Chattanooga on Thursday. He smiles in a mugshot (left) following his arrest for driving under the influence in April. Right he is pictured training as an amateur MMA fighter

As the FBI and other law enforcement agencies continue their investigation into the deadly rampage across the city of Chattanooga,Tennessee, the 24 year old's formative years will face scrutiny.

Investigators are trying to build a picture of what caused a seemingly 'all American boy' turn into a killer who targeted the US military. Abdulazeez, a naturalized US citizen, died after Chattanooga police converged on his silver Mustang convertible outside a Naval Reserve center where the four victims were killed.

Over 24 hours after the shooting US authorities said no links have yet been found to the ISIS terror group who have called for 'lone wolf attacks' on US soil. FBI agents removed computers from the killer's home and two of his sisters were led out in handcuffs.

Authorities in Chattanooga are treating the killings as a domestic terror incident.

Two fathers, a 21-year-old barely out of boot camp and a Purple Heart recipient who served two tours of duty in Iraq have been identified as the four Marines whio died.

They were named as Gunnery Sgt Thomas J Sullivan, 40; Lance Cpl Skip Wells, 21; Sgt Carson Holmquist, 27 and Staff Sgt David Wyatt, 37.

The divorce complaint was filed by Mohammad's mother Rasmia in February 2009 at the Hamilton County courthouse in Chattanooga.

The petition – which laid bare the abuse she suffered at the hands of her husband – was later settled.

Home: The Abdulazeez family home in Hixson, Tennessee. It was raided by law enforcement yesterday

Documentary proof: These are the divorce papers which suggest the man who murdered four Marines came from a troubled home

Control freak: The papers suggested the father gave his wife little or no money, struck her, sexually assaulted her and demanded that he take a second wife

Demand: Rania asked for a restraining order against her husband and said that she had no income or skills

First stage: The papers were the opening of a divorce case but it was later settled

In the seven page complaint Rasmia alleged that her husband had been guilty of 'inappropriate conduct' and said he had beaten her so severely that she was forced to seek refuge in a women's shelter.

The mother of five also claimed that the beatings took place in front of the children and her 57 year old husband had sexually assaulted that she when the children were present.

Rasmia alleged that her husband told her he intended to take a second wife 'as permitted under certain circumstances under Islamic Law, in the parties' native state of Palestine.'

She alleged he had been physically and verbally abusive to the children 'striking and berating them without provocation or justification.'

Rasmia went on the claim that her brothers had flown to Chattanooga from their home in Kuwait and Washington DC to try and mediate in the situation.

But she wrote that the arrival of her relatives had a negative effect with her husband becoming more abusive and carrying out another sexual assault.

Rasmia adds that she is in fear of her safety and that unless a restraining order is put in place.

'She is in fear for her safety at the hands of the Defendant,' the petition said.

'She avers that unless a Restraining Order is entered removing him from the marital home and preventing him from coming around her, she will be irrevocably injured.'

Cause: A message posted on social media on one of the murderer's sister's accounts shows the family's views on the Middle East

Support: The Marine-killing gunman's sister also posted this entry on the murder of a Muslim family in Chapel Hill, North Carolina

The complaint continues with Mohammad's mother revealing that her husband controls all the finances leaving her no chance to find a place of her own.

'Defendant has control over all the money and property in the household. Plaintiff has been able to save just a few dollars each week from the limited amount given by the Defendant to Plaintiff for family expenditure. Plaintiff has not job nor funds by which to obtain housing.'

The petition reveals that despite the alleged abuse Youssuf had a 'fairly good relationship' with his children and agreed to regular contact.

The petition ends with Rasmia's attorney John Meldorf requesting the court approve a temporary injunction removing Youssuf from the marital home.

The petition was withdrawn nine days after being filed in February 2009 after Youssuf agreed to sing a postnuptial agreement.

Investigation: Law enforcement personnel gather outside the home of gunman Muhammad Abdulazeez. FBI officials said no one else has been taken into custody and no one else is believed to be involved

Yearbook photo: Muhammad Youssef Abdulazeez wrote between two pictures of himself: 'My name causes national security alerts. What does yours do?'

Happy student: Muhammad Youssef Abdulazeez attended the University of Tennessee, Chattanooga and graduated in 2012 with a degree in electrical engineering. His mother posted these pictures - three years after she filed the divorce papers accusing her husband of sexual assault and violence

The soil-engineering specialist, who fled to the US from Kuwait with his family in 1996, agreed to undergo counseling by himself and with his wife.

He also agreed to spend an hour every night with her to discuss family matters and if a divorce did take place he would give her $100,000.

As law enforcement agencies look for a motive for the murder of four Marines, the killer's former Mixed Martial Arts instructor told Daily Mail Online ATF agents visited him at 3am.

Almir Dizdarevic had given interviews where he talked about Abdulazeez leaving the US and spending time in Jordan.

He also claimed to have seen the former engineering student a week before he carried out the killings at a recruitment centre.

Dizdarevic said he was woken up in the middle of the night by agents from the Alcohol, Tobacco and Firearms agency.

He said:' They came at 3am. I told them everything I know which isn't very much. I am happy to cooperate with law enforcement.'

Dizdarevic also said he prayed at the same mosque as Abdulazeez. 'He went back home and he stayed overseas,' Dizdarevic said.

'And I asked his dad about, you know, where's Mohammad? I haven't seen him in a while and he said 'he moved back home.'

Dizdarevic said the two saw each other occasionally when Abdulazeez visited his parents home.

'I asked him 'how is everything, what you doing? He said he is teaching kids, he is teaching wrestling'.

HEROES GUNNED DOWN IN THE HOMELAND THEY SWORE TO PROTECT

Two fathers, a 21-year-old barely out of boot camp and a Purple Heart recipient who served two tours of duty in Iraq have been identified as the four Marines savagely murdered in Thursday’s terror attack in Chattanooga, Tennessee.

Gunnery Sgt Thomas J Sullivan, 40; Lance Cpl Skip Wells, 21; Sgt Carson Holmquist, 27 and Staff Sgt David Wyatt, 37 were training at a Navy reserve center just after 11am on Thursday when gunman Muhammad Youssef Abdulazeez, 24, a naturalised U.S. citizen, pulled up in a rented silver convertible and started shooting at the group through a fence in the second stop on a deadly double shooting spree.

Just minutes earlier, the Muslim who grew up in the upscale suburb of Hixson had fired dozens of rounds into the offices of a military recruitment center at a strip mall - leaving one injured. The brutal attack was eventually brought to an end when police intervened and shot dead Abdulazeez.

Loved ones of those senselessly murdered, paid tribute to them today as an 'amazing father', a perfect Marine, and a young man who 'felt called to serve'.

And touching photos reveal the lives behind their service. Skip Wells, the youngest victim, shared a moving photo on Facebook hugging his girlfriend and proudly posing in uniform – his baby-faced portrait a testament to his early years cut short while David Wyatt, a married father of two, is pictured in an emotional homecoming with his two children, who are proudly waving American flags for their hero dad.

Victims: Lance Cpl Skip Wells, 21, and Gunnery Sgt Thomas J Sullivan, 40 (right), were the other two Marines killed in the attack

Fallen: Sgt Carson Holmquist, left, and Staff Sgt David Wyatt, right, have been identified as two of the victims of Thursday's terror shooting at a Naval Reserve Center in Chattanooga, Tennessee

LANCE CPL SKIP WELLS

Wells (pictured) had allegedly wanted to become a Marine ever since he was a little boy, his girlfriend Carolina Dove said

Lance Cpl Skip Wells had wanted to be a Marine ever since he was a little boy, his girlfriend Caroline Dove told CNN in an eloquent interview on Friday.

Dove, who had been dating Wells for the past two and a half years, met her boyfriend while they were both studying history at Georgia State University.

'We were both history majors and there was a connection just right off the bat. He knew what he had to do to make me happy and I knew what I had to do to make him happy and we were just compatible,' she said. 'It was great that we worked out for as long as we did.'

Since joining the military, Dove and Wells had been long-distance while Wells worked in Tennessee and Dove continued her education in Georgia.

She says the last time she saw her boyfriend was in February and that she had plans to visit him next week - a dream reunion that will now never happen.

Dove says that her boyfriend was proud to serve his country, and that his one ambition in life was to be remembered for service.

'I know when we first met, he said, "You know, I'm going to be a Marine. That's all I really want to do, that's all I know and that's all I love."' Dove recalled.

Done says Wells spent a lot of time speaking with recruiters about the process of joining the Marines before he was officially sworn in last year - realizing his dream career.

Wells officially became a Marine on May 9, 2014, when he graduated from boot camp.

He beams proudly in pictures from the day on Facebook, embracing his girlfriend in one picture and beaming proudly next to his parents and mother (who also served in the Marines, according to friends) in another.

Dove is also an enlisted Marine, just weeks away from boot camp.

While the shooting has no doube been shaking, Dove says it has only strengthened her resolve to join the military.

'Seeing as this has happened on our soil it has encouraged me to want this even more and I actually want to live out my life as a Marine and be able to do it for him because I know that's what he wanted me to do.

'He as truly honest, he was smart, he was loyal - just anything you could imagine in a good guy and a good Marine.

'I'm gonna miss his funny little quirks...he always knew how to make me laugh, how to make me smile, how to make me feel better about anything,' Dove said.

Garrett Reed, a longtime friend of Wells who has known him since the fourth grade, believes he wanted to join the military because of his family's legacy of service.

'He loves his country, his momma served in the military...I think he just wanted to follow in her footsteps,' Reed said.

According to pictures posted to Facebook, he had recently returned from a trip to DisneyWorld with his mother.

Reed said he was shocked when he learned that his childhood friend had been killed in the terror attack on Thursday

'You hear about this kind of stuff on the news all the time and you just never think it can happen to one of your friends,' Reed said.

In describing Wells' personality, Reed said: 'He was just a funny guy, real caring. Just a really nice guy, you just couldn't find a nicer guy than him.'

Calling: family friend told a local news station in Atlanta, Georgia that Wells felt 'called to serve'

Lance Cpl Skip Wells is pictured above with a woman who appears to be his girlfriend, taken around the time of his boot camp graduation last yearb

Fresh out of training: Wells, pictured center, had just graduated from boot camp last year. Pictured above with his grandfather, grandmother and mother in a photo posted to his Facebook in May 2014

Incredible loss: Wells pictured above with a woman who appears to be his girlfriend in a photo posted to Facebook

GUNNERY SGT THOMAS J SULLIVAN

Sullivan, from Springfield, Massachusetts served two tours of duty in Iraq, survived the battle of Abu Ghraib and was awarded the Purple Heart, his family told MassLive.

Sullivan's brother Joe is a pub owner in their hometown, and wrote a post on the bar's website in honor of his fallen sibling after hearing the terrible news.

'He was our hero and he will never be forgotten. Please keep his family & friends in your thoughts and prayers. Thank you Tommy for protecting us,' the post reads.

As the family mourns Sullivan's passing, his brother has asked residents in their community to lower their American flags to half mast.

'There’s no Marine you would want that was better in combat than him,' Sullivan's friend, Josh Parnell, told Patch. 'He’d been shot at so many times over the years and then for this to happen at home in the United States.'

A woman claiming to be a friend of Sullivan's on Twitter shared a picture of the sergeant in his uniform next to two Purple Hearts, writing: 'RIP GySgt Thomas Sullivan, it was an honor knowing you and knowing you're the reason why my mom would smile.'

Sullivan was one of three children to Jerry and Betty Sullivan and graduated from Springfield's Cathedral High School before joining the military.

Decorated: Sullivan's brother has asked community members in their home town to lower American flags to half mast to mourn his passing

Fallen son: Sullivan is one of three children to Jerry and Betty Sullivan. He graduated from Cathedral High School in Springfield, Massachusetts before joining the military

Why? The motives behind Abdulazeez's attack are not yet known, but a blog post written in the days before the shooting appear to show he had become radicalized. Sullivan pictured above

Twin shootings: Sullivan (pictured) and the three other victims of Thursday's shooting were killed at a U.S. Naval Reserve center in Chattanooga, the second of two military locations Abdulazeez targeted that morning

SGT CARSON HOLMQUIST

Sgt Carson Holmquist, a man who just returned from a nearly year-long deployment last July, was another of the four men tragically killed in Thursday's shooting.

The 27-year-old originally from Grantsburg, Wisconsin leaves behind a wife, Jasmine, and a 2-year-old son Wyatt.

At the time of his untimely death, Holmquist and his young family were living in Jacksonville, North Carolina where he was stationed at Camp Lejeune.

While his family has yet to issue a statement on his death, it is very clear that he was loved.

Pictured posted to Facebook show his wife and toddler son with broad smiles, welcoming him home from a deployment last July.

In the photos, mother and son wave American flags and hold up posters reading 'Welcome home Daddy!' and 'We've waited 244 days for this moment'.

Friends also paid tribute to the fallen Marine on Facebook, posting kind words like 'You will be missed bud'.

Sgt Carson Holmquist pictured on the right with his wife Jasmine and their 2-year-old son Wyatt in a photo posted to Facebook

Sgt Holmquist, left, is from Grantsburg, Michigan but was living with his family in Jacksonville, North Carolina at the time of his death, near where he was stationed at Camp Lajeune. Pictured above with his wife Jasmine

Sgt Holmquist returned from a 244-day deployment with the Marines last year, according to this photo posted to Facebook of his wife and son welcoming him home

STAFF SGT DAVID WYATT

Staff Sgt David Wyatt lived with his wife and two kids in Hixson, Tennessee - the same Chattanooga suburb where Abdulazeez grew up with his family.

As FBI agents swarmed the gunman's home on Thursday, mourners began to arrive at Wyatt's home just six miles down the road.

'There were seven or eight cars there last night. I thought they were having a party. It didn't go through my mind,' neighbor Antony Madakcherry told the Tennessean.

Wyatt, originally from Russellville, Arkansas attended university in Montana before joining the military.

He married his wife Lorri in December 2004, and the couple went on to have two children - a boy and a girl according to photos posted on Mrs Wyatt's Facebook.

As friends and family wrote their condolences on Facebook Thursday night, Lorri responded and thanked everyone for their support, writing that her husband had been 'an amazing father'.