At least 22 people were killed and 50 to 60 others were injured in a series of attacks by a white man armed with a semi-automatic rifle in the city of Lewiston, Maine, NBC News reported, citing law enforcement sources.

Police are investigating at least two to three armed attacks in the town of Lewiston, Maine, the Androscoggin County Sheriff’s Office announced Wednesday night, releasing on Facebook two photos of a suspect with a gun, believed to be a semi-automatic rifle, in his hands.

“We are encouraging all businesses to lock their doors and/or close while we investigate. The suspect remains at large,” the sheriff’s office said.

The Sun Journal, citing a police spokesman, reported three attacks on as many businesses: Sparetime Recreation, which hosts pool games and parties, especially for children, the Schemengees Bar & Grill restaurant, and a distribution center for the supermarket chain. Walmart. He added that there were “many” injured — and possibly dead.

The information that a gunman is committing attacks with the intention of killing people (“active shooter situation”, in the terminology of American law enforcement services) in Lewiston was confirmed through X (the former Twitter) by the Maine State Police, calling on citizens to “take shelter where they are’, or to remain in their homes ‘with the doors locked’ as police officers operate in various locations.

The Androscoggin County Sheriff’s Office asked for the public’s help in identifying the suspect, a white man with a beard who is pictured in the photos wearing a brown hoodie and dark cargo pants holding a rifle loaded with a scope, ready to fire.

Maine Gov. Janet Mills said via X that she was aware of the attacks.