COLORADO SPRINGS, Colorado (CNN) -- Matthew Murray was kicked out of a missionary training program five years ago for strange behavior, and talked about hearing voices, according to a man who served at the center with him.At first glance, this would suggest schizophrenia (which usually hits in the late teens or early 20s). His father was a neurologist--someone that you would expect to have seen and understood such signs.
Murray was the gunman who killed two people at the Youth With A Mission center on Sunday and two others at a Colorado Springs megachurch later that day, police said. He was shot by a church security guard and died of his wounds.
Richard Werner, 34, said Monday he was a worker at the center in Arvada, Colorado, in 2002, the same time as Murray.
He said Murray was told in December 2002 he would not be allowed to join a mission trip to Bosnia. That was five days after Murray performed a pair of dark rock songs at a concert at the mission that made fellow workers "pretty scared," according to Werner.
The performance -- which included a song by rock band Linkin Park and another that had been recorded by controversial rocker Marilyn Manson -- followed months of strange behavior, Werner said.
Werner, of Balneario Camborius, Brazil, said he had a bunk near Murray's and that Murray would roll around in bed and make noises.
"He would say, 'Don't worry, I'm just talking to the voices,' " Werner said. "He'd say, 'Don't worry, Richard. You're a nice guy. The voices like you.' "
This report from Denver's channel 9 indicates that between the two sets of shootings, Murray apparently posted what he was going to do:
KUSA - 9Wants to Know has discovered more than a dozen writings posted by Matthew Murray where he warns of an impending rampage and copied the statements of one of the Columbine High School gunmen.
On Monday, police confirmed that 24-year-old Murray was the gunman in the deadly shootings at both the Youth With a Mission center on the Faith Bible Chapel campus in Arvada and at New Life Church in Colorado Springs. Three people, including Murray, were killed in Colorado Springs, and two others died in Arvada. Five other people were wounded.
"You Christians brought this on yourselves," Murray wrote on a Web site for people who have left Pentecostal and fundamentalist religious organizations.
It was the most recent posting of his on the site, dated Sunday, December 9 at 11:03 a.m.
Murray lived with his parents in a home in unincorporated Arapahoe County where police conducted a search on Sunday night.
In the Web writings, which are now being investigated by Colorado Springs Police, Arvada Police and the FBI, Murray warned, "I'm coming for EVERYONE soon and I WILL be armed to the @#%$ teeth and I WILL shoot to kill. ...God, I can't wait till I can kill you people. Feel no remorse, no sense of shame, I don't care if I live or die in the shoot-out. All I want to do is kill and injure as many of you ... as I can especially Christians who are to blame for most of the problems in the world."
If the time on the posting is accurate, it was posted after the 12:30 a.m. shooting Sunday morning in Arvada and before the 1:10 p.m. Sunday afternoon shooting in Colorado Springs.
Murray's first posting on the day of the shootings is time stamped 10:50 a.m. It begins with a goodbye to those he has corresponded with for the past several months.
"You guys were awesome. It's time for me to head out and teach these (expletive) a lesson."
Murray continued, "Thanks for listening and all ... even though even many of you ex-Pentecostals don't understand ......(sic) See you all on the other side, we're leaving this nightmare behind to a better place."