Authorities say a three-year-old boy has died after falling from the 13th floor of a New York City apartment building.

Officials say emergency workers rushed the child from the 116-apartment public housing development to Harlem Hospital at about 7:15 p.m. Sunday.

Police say the boy fell from the 13th floor of a 15-story building.

They say investigators are probing whether a window guard was properly secured.

The child's identity wasn't released.