A crowded Chelsea apartment was the scene of a brazen robbery where the suspects, armed and wearing masks, robbed the occupants before fleeing out a window, police said.

Eleven men and women, ranging in age from 19 to 35 years old, were inside a third-floor apartment near West 27 Street and 9th Avenue on Saturday at about 1:40 a.m. when the robbery occurred, authorities said. 

RELATED: Man arrested for random face slashing

Four suspects, each armed and wearing masks, entered the apartment and told the occupants to to get down on the ground. They then took the occupants’ cellphones and an undetermined amount of cash. One of the victims called 911, and the suspects fled through a bedroom window as police arrived.

Anyone with information in regards to this incident is asked to call Crime Stoppers at 1-800-577-TIPS (8477). The public can also submit their tips by logging onto the Crime Stoppers website nypdcrimestoppers.com or by texting their tips to 274637 (CRIMES) then enter TIP577. All tips are strictly confidential.