The gunman who opened fire in a small Texas church, killing 26 people during Sunday services, had sent threatening text messages to his mother-in-law before the attack, which appeared to stem from a domestic situation, authorities said Monday.
"There was a domestic situation going on within the family and the in-laws," Freeman Martin, a spokesman for the Texas Department of Public Safety, told reporters on Monday. "The mother-in-law attended the church. We know he sent threatening ... that she had received threatening text messages from him."
It has also been learned that Devin Kelley, the man authorities have identified as the gunman in Sunderland Springs, was discharged from the air force several years ago for allegedly assaulting his spouse and a child.