Two people were hospitalized for treatment of smoke inhalation Monday after fire erupted in the basement of a Baker Avenue home.

The fire, reported shortly before 8:45 a.m. Monday, triggered a response by three engines, a rescue truck and shift commander. The first firefighters arriving on the scene reported heavy smoke was billowing from the front and right side of the structure. A second alarm was activated, bringing to the scene a fourth Westport engine and ladder truck along with a mutual-aid engine and ladder truck from the Norwalk Fire Department.

Heavy smoke filled the entire dwelling, said firefighters, who discovered the source of the blaze in the finished basement. Fire crews from Engines 4 and 2 used one hose line to extinguish the flames and prevent the fire's spread to the rest of the house from extending throughout the house.

Meantime, other firefighters searched the rest of the house to make sure everyone was out of the building. The two occupants were brought to Norwalk Hospital by Westport EMS for treatment of smoke inhalation. No other details on their condition were immediately available.

The basement area suffered "significant fire and water damage," according to the fire report. The rest of the house suffered smoke damage, firefighters said.

A total of 27 firefighters were dispatched to the fire scene, and the blaze was brought under control in about 20 minutes, firefighters said.

Cause of the fire is being investigated by the Fire Marshal's Office.