A gunman opened fire inside a Mormon church in Michigan during Sunday services before apparently setting the building ablaze, killing at least one person and injuring nine before police shot him, authorities said.

Hundreds of people were inside The Church of Jesus Christ of Latter-day Saints in Grand Blanc Township when a 40-year-old man rammed a pickup truck through the front door, then got out of the vehicle and started shooting, police Chief William Renye told reporters. Police believe he “deliberately” set the building on fire.

After the suspect left the church, two officers pursued him and “engaged in gunfire,” Renye said. The man was killed.

Flames and smoke could be seen pouring from the church for hours before the blaze was put out. First responders were then sifting through the wreckage.

Police said they did not yet have a motive for the fire or shooting. Investigators are searching the suspect’s residence in nearby Burton. Authorities did not provide any additional details about the suspect, including whether he was a member of The Church of Jesus Christ of Latter-day Saints, widely known as the Mormon church.

President Donald Trump said he was briefed on the shooting. In a social media post, he applauded the FBI, who local authorities said are sending 100 agents to the area, for responding.

The church building, circled by a parking lot and a large lawn, is near residential areas and a Jehovah’s Witness church.

The shooting occurred the morning after Russell M. Nelson, the oldest-ever president of The Church of Jesus Christ of Latter-day Saints, died at 101. The next president of the faith is expected to be Dallin H. Oaks, per church protocol.