Greg McDowell reportedly saw his killer approach before he was gunned down as he led Bible study at Creflo Dollar's World Changers church in College Park on Wednesday. McDowell, 39, was pronounced dead at South Fulton hospital following the 10:30 a.m. shooting. The suspected shooter, Floyd Palmer, 59, was taken into custody hours later outside Macy's at Lenox Square Mall in Buckhead, north of Atlanta.

Court records obtained by WSB-TV reveal the former World Changers employee was committed to a mental hospital in Baltimore, Maryland in 2001 after pleading not criminally responsible for shooting another man.

A witness told WSB-TV that Palmer followed the unidentified man outside and shot him for no apparent reason.

Court records show Palmer was released from the mental hospital a year later with unspecified 5 year conditions. The 2001 victim is paralyzed, according to a family member.

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Update: An arrest has been made in the fatal shooting of a minister at Creflo Dollar's megachurch in College Park early Wednesday. The shooting occurred inside the old chapel on the campus of World Changers church around 10:30 a.m.

According to witnesses, Greg McDowell, a 39-year-old volunteer prayer leader at the church was shot inside the old chapel -- not in the famed World Changer's chapel, where Bible study was being held. McDowell was transported to South Fulton hospital, where he was pronounced dead.

Wsbtv.com reports that 52-year-old Floyd Palmer was taken into custody an hour ago at Macy's in the Lenox Square Mall in Buckhead, north of Atlanta.

U.S. Marshals joined with the county SWAT team in the massive manhunt for the shooter.

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