The Oregon college gunman wrote that he would be 'welcomed in Hell and embraced by the devil' in a rambling letter he left behind before committing his massacre.

Chris Harper-Mercer, 26, wrote that he was 'in a bad way' and 'had no life', an anonymous official who has seen the note told NBC News.

He is also said to complained that he did not have a girlfriend, adding that 'he felt the world was against him'. The full letter is yet to be released by investigators.

Mercer, who killed nine people at Umpqua Community College yesterday, was discharged from a U.S. Army training center in 2008.

It is also now believed that the shooter had Asperger's Syndrome and attended a high school for students with behavioral issues.

People who went to school with the mass murderer also spoke of the chilling drawings of skulls, bones and coffins Mercer would scrawl on his notebooks. He is also alleged to have had a 'manifesto' with the '666' written across it.

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Oregon college gunman Chris Harper-Mercer wrote that he would be 'welcomed in Hell and embraced by the devil' in a rambling letter he left behind before committing his massacre

Discharged: Mercer was kicked out of the Army while training at Fort Jackson (pictured) after just five weeks

The revelation came as it emerged that investigators found seven weapons at Mercer's home (apartment building pictured) overnight

Mercer, who died in a shoot-out with police after the massacre,was suffering from Asperger's Syndrome, according to online posts written by his mother.

His mother Laurel, a nurse, wrote on a medical forum that she had an 'Asperger's kid' and told neighbors her son had 'mental issues', according to reports.

The email she used was linked to her by public records, which also confirmed her profession.

According to reports she also told neighbors that her son had ‘mental issues’ and attended a special school for pupils with special needs.

Mercer attended the Switzer Center in Los Angeles, that specializes in students with behavioral issues aged 12 to 22. He left in 2009.

Former classmates of the killer say he had an obsession with drawing macabre pictures of bones, coffins and skulls on his notebook.

'He had this notebook with all these pictures of skulls that he had traced, and they had like fire in their eyes and looked really weird,' Gabriel Rivera, 25, told People.

'He would sit in class and just draw weird s**t like bones or coffins instead of doing the work.'

'Chris didn't talk to anyone. He was mad that he was at the school and didn't like anyone. He didn't have a lot of friends, I can't even think of anyone who he ever was friends with.'

A source also told People that Mercer had a 'manifesto' with '666' written across it, and wrote about wanting to 'serve darkness'.

'The guy did this strictly for satanic purposes. He did it to become a god in hell. He wants to be evil. That is his goal, to serve Satan,' the source said.

Investigators confirmed at a press conference (pictured) that they had found seven weapons at Mercer's home overnight, as well as six at the school - more than previously thought

Mercer attended the Switzer Center (pictured), that specializes in students with behavioral issues, according to reports

A bullet casing is marked at the scene of the deadly shooting at Umpqua Community College in Roseburg, Oregon

While there is no suggestion that Mercer’s mental health problems led directly to his rampage, Adam Lanza, who killed 26 teachers and children at Sandy Hook Elementary School in Newtown, Connecticut in 2012 also had Asperger’s.

Earlier today the Pentagon said Mercer was kicked out of the Army while training at Fort Jackson.

Officials said he was discharged after just five weeks of training in late 2008 after 'failing to meet the minimum administrative standards to serve in the U.S. Army'.

Military spokesman Lt. Col. Ben Garrett said Harper-Mercer was in the military for a little over a month at Ft. Jackson, South Carolina, but was discharged for failing to meet the minimum standards.

Garrett did not say which standards Harper-Mercer failed. Generally, the Army requires recruits to pass physical fitness tests and to be in generally good physical and mental health. Recruits must also pass a multiple-choice test covering science, math, reading comprehension and other topics.

The New York Times reports that while living in his former home in Torrance, Los Angeles, he was extremely bothered by barking dogs and cockroaches in their apartment.

A NURSE, MATURE STUDENT, A QUADRUPLET AND A FORMER DRUG ADDICT WHO HAD MANAGED TO TURN HIS LIFE AROUND: THE OREGON VICTIMS The tragic victims of Oregon's mass shooting were identified on Friday as relatives, friends and co-workers tried to come to terms with their tragic loss. 19-year-old student Lucero Alcaraz was the first to be identified by relatives. Her older sister, Maria Leticia, posted a heartbreaking tribute on Facebook saying the first-year UCC student had aspired to be a pediatric nurse. 'Lucero, I miss you I wish you were here,' Maria Alcaraz wrote. 'I can't sleep. I never got the chance to tell you how proud of you I was. 'You would have been a great pediatric nurse. I was so proud of you for getting you college completely paid through scholarships and you made it into college honors. Lucero Alcaraz, left, was one of the first victims to be identified. She was training to become a pediatric nurse. Lucas Eibel, right, was also named among the dead - he is a quadruplet and just 18 years old 'You were going to do great things love. I ache so much right now..I need you..' 'I don't know how I will make it through this ...I don't know if I can ever relieve this pain. Rest in piece sister...I'll see you soon.' The second victim was identified Friday as Jason Johnson, whose mother spoke proudly of her son's new-found commitment to turning his life around. Tonja Johnson Engle told NBC News the 33-year-old had struggled with drug addiction but completed a six-month rehabilitation program and enrolled in Umpqua Community College to continue his education. ‘He started Monday and he was so proud of what he had accomplished, and rightly so," Johnson Engel tearfully told the station. ‘The other day he looked at me and hugged me and said, “Mom, how long have you been waiting for one of your kids to go to college?” And I said, “Oh, about 20 years."’ The heartbroken mother said she last saw her son alive as he was leaving for class Thursday morning. 'Love ya,' Jason told her after giving her a kiss. 'I'll see you this afternoon.' 20-year-old Treven Anspach, pictured left, was named as one of the victims by friends and relatives while Rebecka Carnes, 18, pictured right, was also killed. Her step-father said they were at a loss for words The deaths of two more UCC students, Lucas Eibel and Rebecka Carnes, both 18 years old, were confirmed by their families this afternoon. Carnes' stepfather, Aaron Chandler, told the station KATU: 'We are at a loss for words.' The New York Times reported the 18-year-old was a star softball player in high school and was studying to become a dental hygienist. Carnes had just began classes at UCC on September 28. Lucas Eibel, also 18 years of age, was a quadruplet. According to the Roseburg News-Review. Lucas, his two brothers, Mitchell and Cole, and sister Alexis graduated from high school this year. A friend of 20-year-old Treven Anspach confirmed to People Magazine that he was among the victim's of Thursday shooting rampage. 'We have been trying to figure out how to tell everyone how amazing Lucas was, but that would take 18 years,' his family said in a statement. 'Lucas loved FFA, volunteering at Wildlife Safari and Saving Grace animal shelter. He was an amazing soccer player. He graduated Roseburg High School with high academic marks.' Jesse Milbrat, also 20, told the publication he and Anspach were former school mates and co-workers at Roseburg Forest Products. Jason Johnson's mother confirmed he was one of the dead. She said the 33-year-old had struggled with drug addiction in the past but was proud to have turned his life around 'He was a hard worker and a damn good basketball player,' the friend said. 'He deserves way better.' Milbrat last saw Anspach in May before leaving for the Army. 'The last thing he said to me was, "Good luck and thanks for your service",' he said. Kim Dietz, 59, who was divorced with one daughter was in a lecture when Chris Harper Mercer burst in. A friend, Natalie Robbins, 38, said she heard of Mrs Dietz' death from a fellow student immediately after the shootings - news confirmed in a phone call two hours ago from the 72-year-old's former husband. 'Kim and I had a lot in common despite the differences in our ages,' said Mrs Robbins. 'She had come through a nasty divorce and she didn't have much education. 'She would help me with math. She was an open person, a lovely person and I watched her bloom over the two terms we studied together. 'Each term she got more comfortable [with me] and we shared many happy moments and a few tears too.' Kim Dietz, 72, is the oldest victim identified so far, she was a mature student at the Oregon college Recent high school graduate Quinn Cooper, 18, was also named as a victim. His family described him as a 'funny, sweet, compassionate and such a wonderful loving person. He always stood up for people. Quinn and his brother Cody are inseparable. I don't know how we are going to move forward with our lives without Quinn. Our lives are shattered beyond repair. No one should ever have to feel the pain we are feeling.' 18-year-old 'funny, sweet and compassionate' Quinn Cooper, left, was killed as was lecturer Larry Levine, right Teacher Lawrence Levine was also killed in the shooting. Eyewitness reports suggested it was his class that Chris Harper-Mercer targeted in the massacre. 'He was the sweetest, most gentle, kind, thoughtful and creative person. My heart is broken,' said David Furman, a lifelong friend. He also enjoyed to write mystery novels according to a former student with whom he had a romantic relationship. Sarena Dawn Moore, 44, was one of the victims identified in Thursday's mass shooting Sarena Moore, 44, was a Seventh-day Adventist according to her Facebook page and also loved animals, sharing pictures of horses and dogs. Moore, who also worked at her church, had two sons who lived in the area. Her brother, Rick Goin, was not yet ready to speak about his sister's death Advertisement

Neighbor Julia Winstead said that Laurel Mercer told her: ‘My son is dealing with some mental issues, and the roaches are really irritating him’.

‘She said they were going to go stay in a motel. Until that time, I didn’t know she had a son.’

Reina Webb, 19, said the Mercer's mother was friendly and often chatted with neighbors, but he kept to himself.

She said she occasionally heard him having temper tantrums in his apartment.

'He was kind of like a child so that's why his tantrums would be like kind of weird. He's a grown man. He shouldn't be having a tantrum like a kid. That's why I thought there was something - something was up,' she said.

Another neighbor, Bronte Harte, said Harper-Mercer 'seemed really unfriendly' and would 'sit by himself in the dark in the balcony with this little light'.

State legislators did attempt to close the unlicensed seller loophole in recent months, but several rural sheriffs, including where the killings took place (pictured), said they had no intention of enforcing the la

Even if Harper-Mercer was unable to pass a background check, he could have bought his weapons from an unlicensed private seller, skirting the security measure (pictured, Oregon students comfort each other after the shooting)

The revelation came as investigators said they had found seven weapons at Mercer's home overnight, as well as six at the school - more than previously thought and all owned legally.

Mercer, 26, was carrying an assault rifle and five pistols during his attack at the college.

This included a 9mm Glock pistol and a .40-caliber Smith & Wesson, which were both traced back to the deranged shooter.

He also had a .40-caliber Taurus pistol listed as being owned by someone in Portland and a .556-caliber Del-Ton, as well as five more ammo magazines, according to an official firearms report.

Police found a shotgun, four rifles and two pistols at Mercer's apartment.

Mercer was carrying a flak jacket containing steel plates, as well as five additional magazines of ammunition when he was confronted at the school, Douglas County Sheriff's Office said.

All of the guns were purchased legally, either by him or family members.

Obama yesterday evening used his 15th press conference in the wake of a mass shooting to renew his calls for tougher gun licensing laws in the United States

Shortly after the shooting, President Barack Obama addressed the nation demanding stronger gun laws, saying that the country has become 'numb' to these mass shootings.

According to witnesses, Harper-Mercer went through the school campus, demanding that his victims lay on the ground.

He then made them stand up one at a time and state their religion before opening fire according to one traumatized eyewitness.

Harper-Mercer's spree continued until police officers arrived and shot him dead.

Douglas County Sheriff John Hanlin has said repeatedly that he and his deputies are not going to say the shooter's name because that's what he would have wanted.

'I will not name the shooter. I will not give him the credit he probably sought prior to this horrific and cowardly act,' said a visibly angry Hanlin.

Hundreds went to a candlelight vigil Thursday night, with many raising candles as the hymn Amazing Grace was played.

The nine victims killed in Thursday's massacre have been named by police. Officials identified the nine people as; Rebecka Ann Carnes, 18; Lucero Alcaraz, 19; Kim Saltmarsh Dietz, 59; Treven Taylor Anspach, 20; Lucas Eibel, 18; Lawrence Levine, 67; Quinn Glen Cooper, 18; Sarena Dawn Moore, 44; and Jason Dale Johnson, 33 .