CROWN HEIGHTS - Two children and their father have died after a blaze swept through a six-story building in Crown Heights.

The fire broke out in the top floor of the Saint Marks Avenue residence around 12:30 p.m. Wednesday after neighbors say they heard an explosion. Firefighters had it under control by 1 p.m.

Police say the victims are a 2-year-old, a 3-year-old and a 43-year-old man. The family of three was rushed to Kings County Hospital, where they later died.

About 75 firefighters responded to the blaze.

The cause is under investigation.

AP wire services were used in this report.