A 15-year-old girl fell five stories to her death while trying to get her cellphone during a party in Manhattan late Sunday night, the city police department said.

It happened around 11 p.m. on Reade St. near West Broadway in TriBeCa.

Police said Imogen Roche, who was attending a house party, was trying to retrieve her cellphone from a locked room when she climbed onto a fire escape, hoping to get in through a window.

Authorities said that is where she lost her balance and fell. Roche was taken to Bellevue Hospital, where she was pronounced dead.