DALLAS (AP) — The congregation at a Texas church where two people were fatally shot had repeatedly given food to the gunman, according to the pastor, but had declined to give money to him, angering a man who court records show was deemed mentally incompetent for trial in 2012.

It's unclear whether Keith Thomas Kinnunen's extensive criminal record and psychological history would have barred him from legally buying the shotgun he used during Sunday's attack at the West Freeway Church of Christ in the Fort Worth-area town of White Settlement.

Kinnunen, 43, shot worshippers Richard White and Anton...