A 7-month-old girl has been pronounced dead after she was found unresponsive in a West Side apartment after a neighbor discovered her in a snowsuit wrapped in blankets while in a car seat, authorities said.

The girl was found in the apartment at 3:37 p.m. Wednesday in the 3700 block of West 13th Street, authorities said.

An older sibling of the girl went to a neighbor seeking food because there was none in the apartment, and then the neighbor discovered the 7-month-old inside.

Authorities said the apartment was unheated, but the girl did not appear to have frozen to death â which preliminary reports had indicated was a possibility.

The infant was taken to Mount Sinai Hospital.