NEW YORK (CBSNewYork) – Police say a fight over a dance in the Turtle Bay Bar led to five people being slashed with a knife, including one with a stab wound, sometime after midnight Saturday morning.

Sources tell CBS2’s Jenna Deangelis the incident began when a man entered the bar and tried to dance with a woman. Police say he put his hands on her hips when her boyfriend confronted him. An argument ensued and the assailant pulled out a knife, stabbing and slashing the 27-year-old boyfriend in the torso and shoulders.

His friends tried to help him and were slashed around the head and shoulders.

All five, believed to be in their late 20s or early 30s, are in stable condition at Weill Cornell Medical Center.

Video shows the bar at 2nd Avenue near East 52nd Street being evacuated.

Two suspects in the assault fled the scene and are being sought by police. Police say the main suspect is in his 20s and was wearing a white shirt and white hat.

No weapon was recovered at the scene.

Police, who noted they had been called to this bar four times before, say they are looking at surveillance videos from around the area to gather more information.