Up to 300 law enforcement personnel are searching for the suspect in the mass-shooting in Maine.
At least 18 people are dead and a further 13 injured after the shootings at a bowling alley and bar in Lewiston.
Suspect 40-year-old Robert Card is believed to be armed and dangerous.
There's a "shelter in place" order for residents of the town and two neighbouring ones.
Maine Monitor Editor David Dahl told Mike Hosking that Card had mental health issues.
He says images of him that have been circulated show him pictured with what appears to be an assault rifle.
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