Firefighters battled frigid conditionals and tight quarters in East Boston this morning after a 3-alarm fire broke out on Saratoga Street.

Thirty-three residents have been displaced by the blaze. The Red Cross has responded to help people pushed out of their homes.

Firefighters were on the scene by 5 a.m. battling a blaze that showed fire on three levels of the building at 151 Saratoga Street.

There were no injuries in the fire, according to the Boston Fire Department. The cause of the fire remains under investigation.

— Developing