At least 22 people were killed in the mass shootings in Lewiston, City Councilor Robert McCarthy told CNN in a phone interview.

McCarthy said he received this information from a city administrator in a text message.

Central Maine Medical Center is calling in any available off-duty staff as a result of the deadly shooting, McCarthy said. The armory has been set up as a triage center, McCarthy added.

At least 50 to 60 people are injured in the incidents, though it’s unclear how many are injured due to gunfire, the sources told CNN.

The FBI office in Boston said it's ready to assist following the deadly mass shootings in Lewiston, Maine.

"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," the FBI in Boston said in a statement.

"We continue to urge the public to remain vigilant and report any and all suspicious activity and/or individuals to law enforcement immediately," the statement added. "As this situation is still very fluid, we have no further comment at this time and will refer you to the Maine State Police."

/CNN