At least 22 people are dead and over 60 people are injured after a gunman opened fire in Lewiston, Maine.
The shooter took aim at passersby with an AR-15 at a bowling alley and then a bar.
A manhunt is underway to find the suspect, who is still at large.
Robert Card, 40, from Bowdoin, Maine, was named by Maine state police as the "person of interest".
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Card is an army reserve firearms instructor who was sectioned this summer for mental health reasons.
He was sectioned after he said he heard voices.
Card had recently made threats to carry out a shooting at a National Guard facility in Saco, Maine.
He was armed with an AR-15 style riffle when he began his rampage.
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Mike Sauschuck, a law enforcement spokesperson in Lewiston, said Card "is considered armed and dangerous."
"If people see him they should not approach him in any way."
Lewiston Police said it responded to calls from two locations, a restaurant called Schemengees, and a bowling alley named Sparetime Recreation.
The two sites are about four miles (6.5km), or a 10-minute drive, from each other.
Hunts continue to find Card
Reuters
Enforcement officers announced that they had found the suspect's vehicle - a 2013 white Subaru - but Card was not inside.
The city of Lewiston said that all municipal buildings are closed.
A shelter-in-place order remains in effect for Lewiston and is also now in place in Lisbon, where his car was found.
Hunts continue to find Card.