The shooting suspect has been identified as 26-year-old Devin Patrick Kelley, federal law enforcement sources told CBS News.
Kelley is a former U.S. Air Force member who served from 2010 to 2014. He was dishonorably discharged and court martialed in May 2014, CBS News has learned.
On Sunday night, authorities only identified the suspect as a young white male. They said he was seen dressed in all black and tactical gear -- including a "ballistic vest" -- at a local gas station at 11:20 a.m. He then exited his vehicle, crossed the street and began firing an AR-15 style weapon at the church, officials said. The suspect entered the church and continued to fire.
As he exited the church, a local resident grabbed his gun and pursued the suspect, who dropped his weapon and fled the scene.