Mayor is 'heartbroken'
Lewiston Mayor Carl Sheline said in a statement, "I am heartbroken for our city and our people. Lewiston is known for our strength and grit and we will need both in the days to come."
Lewiston is about 35 miles north of Portland, Maine.
Maine mayor speaks with media following mass shooting
A nurse at Maine Medical told ABC News the shooting unfolded at a bowling alley during its youth night.
"Maine Medical is on lockdown right now awaiting Lewiston patients," the nurse said. "They just called for [emergency department] nurses and critical care nurses to come in [and] set up three stretchers to each single critical care bay. They just got their first two patients -- both gunshot wounds to their thighs."