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Input: An ex-wife of Devin Patrick Kelley  the Texas gunman who killed 26 people in a church   said Friday in  her  first interview since the massacre that  she  lived in constant fear of  him   and more information is coming to light about  his  actions in the weeks leading up to the shooting.
" He  just had a lot of demons or hatred inside of  him  " she told "Inside Edition."
The guilty plea earned  Kelley  a one-year sentence in a military prison  followed by a bad-conduct discharge.
This week  the Air Force acknowledged that it failed to notify the FBI about the conviction  which would have barred  Kelley  from purchasing the firearms he used in the attack on the First Baptist Church in Sutherland Springs.
Less than a week before the Texas church massacre   Kelley  showed up at a festival dressed in black and acted so strangely that people kept a close eye on  him   two longtime parishioners said Friday.
 Kelley  "was completely distant and way out in thought " recalled Judy Green.  She  and  her  husband said  Kelley  often exhibited troubling behavior.
At the fall festival held on Halloween night at the First Baptist Church   Kelley  "didn't even blink --  he  just stared "  she  said.
Rod Green  a former law enforcement officer in Montana  said when he saw  Kelley  arrive in all black  he examined him closely to make sure he was not carrying a gun. The Greens both have licenses to carry handguns  and they are friends with  Kelley 's in-laws.
If  Kelley  had been carrying a weapon  Green said  he would have escorted him away because of all the children there. Judy Green said she positioned herself to keep an eye on  Kelley  at all times.
At a Christmas dinner one year   Kelley  had "bragged about being armed " Rod Green said.
Wilson County Sheriff Joe Tackitt has said the church pastor saw  Kelley  in the crowd at the festival but that the pastor did not witness any behavior that raised alarms.
Investigators have said Sunday's shooting appeared to stem from a domestic dispute involving  Kelley  and  his  mother-in-law  and that  he  had sent threatening messages to  her . The mother-in-law sometimes attended services at the church but was not present on Sunday.  Kelley  died of what appeared to be a self-inflicted gunshot wound after the massacre.

Texas gunman Devin Kelley's ex