Devin Kelley
Devin Kelley was identified as the man responsible for a mass shooting in Sutherland Springs, Texas Sunday that killed 26 people. Twitter

After 26-year-old Devin Kelley was identified as the gunman in Sunday’s devastating mass shooting at a Texas church, two of Kelley’s ex-girlfriends came forward to discuss their encounters with him. Both detailed behavior including harassment and other strange incidents.

“Years after dating me he would try to bribe me to hang out with him,” Katy Landry, one of Kelley’s former girlfriends, told NBC News. “He ended up assaulting me. He would stalk me by repeatedly calling me – even prank calling me, saying really weird stuff.”

Landry said she met Kelley in church when she was a teenager.

“He was very sick in the head,” she added. “He would tell me very sick strange things.”

Another girlfriend named Brittany Adcock told NBC News she dated Kelley for two months when he was 18 and she was 13. When she ended the relationship, he continued to harass her, she said.

“He somehow would always find out my number although none of my friends talked to him and he would constantly call me until I blocked his number,” she said. “Then I’d get calls from an unknown number so I’ve had to change my number quite a bit.”

Adcock, now 22, detailed some of the encounters she had with Kelley after they broke up.

“He would offer me money to hang out with him quite a bit,” she said. “There has been one point that I called the police because he was just calling me so much I wanted to report harassment. One time he told me I should move in with him and his wife and that he would take care of me as long as I walked around topless. Not long after that, his wife messaged me and asked why I’m talking to her husband and I told her what he was saying and sent her screenshots and she then apologized and then I was blocked from speaking to her.”

Authorities were still searching for the motive behind Sunday’s shooting but noted that Kelley was involved in some kind of “domestic dispute” with his in-laws, who often attended the church.

“The suspect’s mother-in-law attended the church,” Texas Department of Public Safety regional director said at a Monday press conference. “She has received threatening texts from him.”

Kelley apparently killed his wife’s grandmother, Lula White, in the attack, CNN reported.

The state of his marriage and name of his wife or ex-wife had not yet been released by authorities. Records showed that Kelley was first divorced in 2012 in New Mexico, but remarried in 2014, NBC reported. The current state of his second marriage was unclear. A former United States Air Force airman, Kelley was court-martialed in 2012 for assaulting his wife and child. He was sentenced to 12 months confinement and was discharged due to “bad conduct” in 2014, Reuters reported.

“She’s very upset,” Kelley’s ex-wife’s mother told NBC News, noting that she would not speak publicly about the situation until she was interviewed by authorities.

Texas Church Shooting
A priest in Russia was sentenced to 14 years in jail for molesting underage girls. Getty Images