The man who officials said crashed a vehicle into a Michigan church and opened fire on the congregation has been identified by the police as a 40-year-old from Burton, Mich., who went to high school nearby and served in the Marines.

The authorities said they believed the man, identified as Thomas Jacob Sanford, also intentionally set fire to the Church of Jesus Christ of Latter-day Saints building in Grand Blanc Township, Mich. They added that congregants were inside attending services when the building was engulfed in flames.

The shooter was “neutralized” in an exchange of gunfire with responding officers, the police said. Two of his victims also died, and eight others were wounded.

Chief William Renye of the Grand Blanc Township Police Department did not provide a motive for the attack.

Records show that the gunman, who also went by Jake, graduated from a nearby high school in 2004. He served in the Marines from 2004 to 2008, and was deployed to Iraq from 2007 to 2008.

Mr. Sanford’s father declined to comment in a brief phone conversation. Several attempts to reach the suspect’s wife and other immediate family members were unsuccessful.