GRAND BLANC, Mich. — A gunman drove his truck into a Michigan church where hundreds were worshiping on Sunday morning, shooting congregants before setting the building on fire, officials said.

At least four people were killed and eight others were injured in the shooting and fire, according to police. The gunman was then killed in a shootout with responding police.

The FBI is now leading the investigation, calling the attack an “act of targeted violence.”

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