Sutherland Springs, Texas: A man convicted of beating his wife and child had sent threatening text messages to his mother-in-law before shooting and killing 26 people in the rural Texas church that she attended.

Devin Patrick Kelley, 26, walked into the white-steepled First Baptist Church in rural Sutherland Springs carrying an assault rifle and wearing black tactical gear, then opened fire during a Sunday prayer service. He wounded at least 20 others, officials said.

After he left the church, two local residents, at least one of whom was armed with a rifle, chased him in their vehicles and exchanged gunfire, and Kelley crashed his car and shot himself to death, Wilson County Sheriff Joe Tackitt told CBS News in an interview on Monday morning.

Freeman Martin, regional director of the Texas Department of Public Safety, said one of the residents, who he described as a "Texas hero [and] Good Samaritan", heard the gunfire and grabbed his own assault rifle before running outside to engage the shooter.