Updated

At least 18 people were killed and 13 more injured following a shooting in Lewiston, Maine, which took place at two locations on Wednesday night, Maine Gov. Janet Mills said Thursday morning.

The Lewiston Police Department identified Robert R. Card of Bowdoin, Maine, as a person of interest in a Wednesday night Facebook post. On Thursday morning, Card was considered a suspect after authorities issued an arrest warrant for eight counts of murder, law enforcement said.

Card, 40, is being sought after the shootings at Schemengees Bar and Grille and Just in Time Bowling, which was recently renamed from Sparetime Recreation. He should be considered "armed and dangerous," and authorities asked the public to contact law enforcement about his whereabouts.

A Maine law enforcement bulletin shared with Fox News Digital states that Card is a "trained firearms instructor believed to be in the Army Reserve stationed out of Saco, ME."

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Suspect seen in picture carrying a gun

The Lewiston, Maine, Police Department released a photo of the suspect, who was seen wearing a brown sweatshirt. (Lewiston Maine Police Department)

An Army spokesperson confirmed to Fox News on Thursday morning that Card has been in the Army Reserve for over two decades, receiving multiple awards for his service.

"Sgt. 1st Class Robert R. Card II is a Petroleum Supply Specialist in the Army Reserve, enlisting in December 2002. He has no combat deployments," Army spokesperson Bryce Dubee said.

"His awards include the Army Achievement Medal, Army Reserve Component Achievement Medal x2, Humanitarian Service Medal, National Defense Service Medal and Army Service Ribbon."

The Maine bulletin also states that Card recently reported mental health issues, including "hearing voices and threats to shoot up the National Guard Base in Saco, ME." No details about his treatment or condition were immediately provided.

Suspect seen in picture holding a gun

Police said that the active shooter situation spanned two locations — Schemengees Bar and Grille Restaurant and Just in Time Bowling, which was recently renamed from Sparetime Recreation. (Lewiston Maine Police Department)

According to the document, Card was committed to a mental health facility for two weeks over the summer before he was released.

Fox News' David Spunt reported, citing a senior law enforcement source, that authorities are aware Card may have a police scanner and could be actively listening to some of their movements. 

He should be considered "armed and dangerous," according to the law enforcement bulletin.

Picture of Maine shooting suspect entering building with a gun

The Androscoggin County Sheriff's Office released two photos of the suspect involved in the active shooting situation in Maine. (Androscoggin County Sheriff's Office)

Card studied engineering at the University of Maine from 2001 to 2004, a school representative said.

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Card's white Subaru Outback was found near the Lisbon boat dock on Frost Hill Avenue near Route 196, authorities said.

Suspect's vehicle with door open

Card's white Subaru Outback was found near the Lisbon boat dock on Frost Hill Avenue near Route 196, authorities said. (Lewiston Maine Police Department)

The Central Maine Medical Center said in a statement it is reacting to a "mass casualty, mass shooter event," but couldn't state the number of victims.

Auburn Mayor Jason Levesque confirmed on NBC's "Today" that the bowling alley was hosting a youth league at the time of the shooting.

Lewiston Maine shooting scene of Sparetime bowling alley with police in front

Police are seen in Lewiston, Maine, where a mass shooting took place on Wednesday night. (Nichoel Wyman Arel)

Pictures shared by the Androscoggin County Sheriff's Office show the suspect wearing a brown sweatshirt and holding a rifle.

Residents of Lewiston were told to "shelter in place" and to "stay inside your home with the doors locked." Maine State Police later said that the shelter in place advisory and school closures expanded to the town of Bowdoin.

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In a post on X, FBI Boston said it is coordinating with local and state law enforcement.

Lewiston Maine Shooting scene with police cars pictured

Police are seen in Lewiston, Maine, where a mass shooting took place on Wednesday night. (Nichoel Wyman Arel)

"The FBI Boston Division continues to coordinate with our local, state, and federal law enforcement partners in Maine, and we stand ready to assist with any available resources they need, including evidence response, investigative and tactical support, as well as victim assistance," FBI Boston wrote in an X post. "We continue to urge the public to remain vigilant and report any and all suspicious activity and/or individuals to law enforcement immediately. As this situation is still very fluid, we have no further comment at this time and will refer you to the Maine State Police."

Fox News' Sarah Rumpf-Whitten, Jacqui Heinrich and Liz Friden contributed to this report.