A man arrested in the death of a University of Utah student whose charred remains were found in his backyard was banned from the campus of Utah State University in 2012, according to documents released on Tuesday.

Ayoola A. Ajayi, 31, is being held without bail on suspicion of aggravated murder, kidnapping and other charges in the death of 23-year-old Mackenzie Lueck.

Prosecutors said Tuesday they had been granted an extension on filing formal charges until next week as they investigate what was on her wiped phone.

It has now been revealed that Utah State University banned him after his student visa expired and he was arrested on suspicion of having a stolen an iPad, a misdemeanor, according to university police reports.

The Los Angeles Times reported that police said he used the Apple device to play video games and look for a wife to avoid being deported although he was already married.

Campus police received a report the tablet was missing and it was tracked via an IP address. Law enforcement stated he lied when he said his mother gave it to him as a gift but he didn't know how to use it. They noted he had wiped the school's device and replaced the contents of it with his personal applications.

Ayoola A. Ajayi was arrested on suspicion of stealing an iPad and banned from Utah State University campus in 2012. He is being held without bail on suspicion of aggravated murder, kidnapping and other charges in the death of 23-year-old Mackenzie Lueck

Ajayi's student visa expired while at Utah State University and he stopped attending class the year before but continued to sleep on residence hall couches and keep things in a janitor's closet before he was arrested in 2012

It's also reported his now-deleted LinkedIn pages stated he worked in IT for Dell, Goldman Sachs, Microsoft and Comcast.

University officials barred him from campus in August 2012, and police also informed the consulate of his native Nigeria of the arrest.

Jail documents show Ajayi is now a U.S. citizen. At the time of his 2012 arrest police documents indicate his student visa had expired but he had married a woman in Texas.

Ajayi attended the university on and off between 2009 and 2016. He had also stopped attending class in 2011 before but continued to sleep on residence hall couches and keep things in a janitor's closet while homeless, according to police and university documents.

Prior to the iPad incident, cops caught him sleeping on a couch outside dorms where he claimed to be meeting a girlfriend but when they spoke to a female student inside she said Ajayi didn't have a partner living there.

An officer reported that he tried to exit a later conversation by claiming he had an exam in the morning.

This undated photo provided by Kennedy Stoner shows herself, from left, posing with Mackenzie Lueck and Grace Peterson. Lueck's cell phone had been wiped and cops noted in a 2012 report that IT man Ajayi had wiped an iPad he was suspected of stealing

Ajayi did a brief military stint and was investigated on a rape allegation in 2014 but no charges were filed. His now-deleted LinkedIn pages stated he worked in IT for Dell, Goldman Sachs, Microsoft and Comcast

The report stated: 'I asked if he had an exam for one of his classes. Ayoola paused for a moment and stated he was taking a blood test in the morning. ... I told Ayoola that I felt he was being deceitful with me, at which time he hung up on me.'

Separate police documents show he was also investigated on a rape allegation in 2014. No charges were filed in the rape case.

The Salt Lake Tribune reports the documents released Monday reveal a former co-worker said the contact with Ajayi began consensually, but when she wanted to stop he refused and had sex with her anyway.

The report says the woman appeared to blame herself. She made a report 'in case he did the same thing to someone else' but opted not to pursue charges.

U.S. Immigration and Citizenship Services declined to provide information about when Ajayi obtained his citizenship, citing privacy protections. Ajayi was allowed to enroll in classes again in 2015 after resolving his immigration status, said Utah State spokesman Tim Vitale.

His ex-wife Tenisha Ajayi told KUTV in Salt Lake City that the marriage ended after he became controlling and abusive, forbidding her from talking to other people and eventually threatening to have her kidnapped and killed. 'I just stopped talking to him because I was fearing for my life,' said the woman, who lives in Dallas.

Ajayi could enroll in classes again in 2015 after resolving his immigration status. He married Texas woman Tenisha Jenkins Ajayi (pictured) but they divorced in January and he is now a US citizen. Tenisha has not seen her husband for years after she went into hiding and changed her cell phone because of his violent outbursts

Police conducted a 19-hour search at Ajayi's home in Salt Lake City's west side (pictured). Lueck's charred remains were found in his backyard

That marriage ended in a divorce in January, court records show.

Ajayi, 31, is being held without bail on suspicion of aggravated murder, kidnapping and other charges in the death of 23-year-old Mackenzie Lueck. Prosecutors said Tuesday they had been granted an extension on filing formal charges until next week.

No attorney has been listed for him.

Lueck has been remembered as a bubbly, nurturing person who loved spending time with her family and looked forward to a career in medicine or health care.

This booking photo provided by the Salt Lake County Sheriff's Office show Ajayi on Friday. Prosecutors said Tuesday they had been granted an extension on filing formal charges, including for aggravated murder, until next week but he is held

A native of El Segundo, California, Lueck was a member of the Alpha Chi Omega sorority and a part-time senior at the University of Utah studying kinesiology and pre-nursing. She was expected to graduate in spring 2020.

Lueck disappeared June 17 after she returned from a trip home to California for her grandmother's funeral. Police have said she took a Lyft from the airport to a park north of Salt Lake City, where she met someone in the early morning.

She was reported missing three days later; launching a search that ended with authorities arresting the man they say was the last person to communicate with her: Ajayi. They say his phone location data put him in the same park at the same time Lueck was last seen, police said.

He was arrested after authorities said they found her remains and personal belongings burned and buried in his Salt Lake City backyard.

Ajayi never earned a degree and was briefly in the Army National Guard.

University of Utah President Ruth V. Watkins speaks during a vigil for Mackenzie Lueck at the university in Salt Lake City on Monday

Police have not discussed a motive for the killing or how Lueck died. It isn't clear how Ajayi and Lueck knew each other. Police have also said they are investigating a report from a construction contractor who said Ajayi approached him in April about building a secretive and soundproof room in his home.

On Friday Barstool Sports fired writer Francis Ellis over a blog post mocking Lueck for being a 'proud sugar baby' just hours before it was confirmed she had been murdered.

Ellis weighed in on hopes that Lueck was still alive after apparent activity on her Instagram account, while demeaning the 23-year-old for what he called a 'pretty weak' social media following, having a profile on SeekingArrangements.com and being an outspoken fan of the Call Her Daddy podcast, which is produced by Barstool.