Officials identified Burton, Michigan, resident Thomas Jacob Sanford, 40, as the suspect in a shooting on Sunday that killed at least four people at a Mormon church in Grand Blanc.

The attack began at 10:25 a.m. when Sandford allegedly drove his vehicle into the front doors of the Church of Jesus Christ of Latter-day Saints, according to Grand Blanc Police Chief William Renye. The shooter then exited his vehicle and opened fire on attendees.