NEW HAVEN, Conn. (WTNH) — New Haven firefighters are currently working at a 3-alarm fire at 55 Benton Street in the Westville neighborhood.

The incident was reported as a basement fire in a wooden residential building just after 7 p.m. About an hour later the fire was upgraded to a 3-alarm fire.

According to New Haven Fire Chief John Alston, a crew was trapped in the basement during operations and a “mayday” call was transmitted. One firefighter was removed and transported to the hospital for evaluation. It’s anticipated he’ll be released.

One victim from the fire was transported to the hospital for smoke inhalation, officials said.

Firefighters were instructed to evacuate to fight the fire externally.

Rick Fontana, Director of New Haven Emergency Operations, said one resident was also transported for smoke inhalation.

According to Fontana, four people have been displaced by the fire.

The Regional Water Authority issued an advisory that some customers may temporarily have discolored water due to hydrants being opened to fight the fire.

This is a developing story. Check back with News 8 for updates.