Police say a man trying to dance with a woman at a Manhattan bar stabbed her boyfriend and his friends.

The suspect entered the bar on Manhattan's East Side early Saturday morning 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 are in stable condition.

The Turtle Bay Bar on Second Avenue near East 52nd Street was evacuated after the attack.

Police say the suspect is in his 20s and was wearing a white shirt and white hat.