One person is dead and another is missing after a fire broke out in a three-story apartment in Brooklyn, N.Y., early Monday morning, according to police. Police were called to scene at around 1:30 a.m. after receiving reports from nearby residents about an explosion in the Williamsburg section of Brooklyn, according to WABC-TV.

"I just heard a massive explosion," one woman said. "It sounded like a bomb went off or something - massive flames coming out of the building and then the fire trucks."

Firefighters arrived soon after and battled the three-story blaze. After successfully putting out the fire, they discovered the body of an unidentified person on the second floor, according to the New York Daily News.

A firefighter suffered minor injuries, but refused to receive medical treatment.

It's believed the fire started in a back apartment and spread to at least two other floors. It took 200 firefighters more than three hours to extinguish the blaze, and by the time it was, the fire had burned through the roof and all three floors, as well as an older tenement building behind it, according to CBS New York.

About 10 residents have been left homeless by the fire, and firefighters are searching for an additional person who has gone missing.

Authorities are investigating to determine the cause of the fire.