EAST LYME, Conn. (WTNH) — Multiple crews battled a fire at a shopping plaza in Niantic Monday night.

East Lyme Police Chief Michael Finkelstein said they received multiple 911 calls around 4:49 p.m. reporting a possible structure fire at Midway Plaza on Flanders Road. When firefighters arrived, they found an active fire, which he said quickly rose to a three-alarm fire.

One firefighter was injured by falling debris, according to Flanders Fire Department Chief Chris Taylor. He is expected to be okay.

Finkelstein said there were a couple of people reported to be trapped in their apartments who were all able to get out safely.

The fire marshal’s office is now working to determine the cause of the fire.

News 8 asked Finkelstein about where the fire might have started. He said they are focusing on an apartment area above one of the businesses but that is part of the investigation to find out how the fire started.

Conditions are slippery at the scene and Finkelstein said that is a concern.

“As the temperature obviously is below freezing, all the water that was placed onto this fire is going to pool, so we have a safety concern for firefighters and people working on the scene,” Finkelstein said. “So, that’s going to be one of our biggest concerns as we go through this investigation and the overhaul is to make sure people stay safe.”

He said ultimately a building official will need to be involved in a decision regarding what businesses can stay open and what will have to be closed due to damage.

It is a major setback for businesses already having a difficult time.

“We’ve worked so hard to come back from being closed for three months with COVID and trying to come back from that, it could be a total loss and a real hardship. There’s two businesses in there that need to keep going and support families. So we’re just hoping for the best and praying that we come out of it okay,” said Sally O’Rourke of The Shop on Mane.

Flanders Road has since reopened.