A gunman opened fire inside a Mormon church in Michigan during Sunday services before 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 ute 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.

“We do believe we will find some additional victims once we find the area where the fire was,” Renye said.

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.

It was the latest of many shooting attacks on houses of worship in the US over the past 20 years, including one in August that killed two children during Mass at the Church of the Annunciation in Minneapolis.

US 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.

“PRAY for the victims, and their families. THIS EPIDEMIC OF VIOLENCE IN OUR COUNTRY MUST END, IMMEDIATELY!” Trump wrote.

The church building, circled by a parking lot and a large lawn, is near residential areas and a Jehovah’s Witness church. It is in Grand Blanc Township, a community of roughly 40,000 people outside Flint.

The impact spread quickly to neighbouring communities, including the small city that shares a name with the township.

“Although we are two separate governmental units, we are a very cohesive community,” said city of Grand Blanc Mayor John Creasey.

“This sort of thing is painful for our entire community. I’m struggling to digest all that has happened, and my heart goes out to all of the affected families.”

Michigan Governor Gretchen Whitmer said in a statement that her heart was breaking for the community. “Violence anywhere especially in a place of worship, is unacceptable,” she said.

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.

“The church is in communication with local law enforcement as the investigation continues and as we receive updates on the condition of those affected,” Doug Anderson, a spokesperson for Utah-based faith said in a statement.

“Places of worship are meant to be sanctuaries of peacemaking, prayer and connection. We pray for peace and healing for all involved.”

Some striking nurses at nearby Henry Ford Hospital left the picket line and ran the short distance to the church to help first responders, Teamsters Local 332 President Dan Glass said.

“Human lives matter more than our labour dispute.” Glass said.