The alleged gunman was ID'd as Devin Kelley from New Braunfels, federal and state law enforcement sources confirmed.
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At least 26 people were killed and 20 injured after the shooting at First Baptist Church in Sutherland Springs.
MORE: At least 27 dead, 27 injured in Texas church shooting, authorities say
The shooter is dead, according to law enforcement officials.
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Wilson County Sheriff Joe Tackitt told a local newspaper that a man walked into a Baptist church in Sutherland Springs, Texas, and opened fire, leaving multiple people dead.
Here is more on what we know about Kelley:
Officials provide update on Texas church shooting
-Air Force officials confirmed to ABC News he served in the U.S. Air Force from 2010 until he was discharged.
-In 2012, Kelley was court martialed for two counts of assault on his spouse and assault on their child.
-He received a bad conduct discharge, confinement for a year and a reduction to the grade of E-1.
-A source told ABC News Kelley spent a year in the brig at Holloman Air Force Base in New Mexico and got out in 2013 for the 2012 offenses.
-He was dressed in all black with tactical-type gear and was wearing a ballistic vest.
-He was at a Valero gas station before he drove across the street to the church, exited his vehicle and opened fire, according to officials from the Texas Department of Public Safety.
-He moved to the right side of the church and continued to fire, before he entered the church and shot people inside.
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-As he exited the church, a local resident grabbed his rifle and "engaged" the suspect. The suspect dropped what was described as a Ruger AR assault-type rifle and fled from the church.
-Authorities said several spent magazines were found at the scene
-The local citizen pursued the suspect and when law enforcement responded, the suspect crashed and was found deceased in his vehicle.
-It was not immediately clear whether he died from a self-inflicted gunshot wound or if he was shot by the local resident.
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-Multiple weapons were found in the vehicle, and the vehicle was being processed by special operations group bomb techs.
-Authorities are searching his social media accounts and said that on Facebook in recent days, he showed off what appeared to be an AR-15-style gun.
-An ATF source said that agents are searching the alleged shooter's home for explosives.
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