Search on for shooter outside Big Sean and J Cole concert

Holmdel - State police on Tuesday were looking for a suspect and witnesses to a shooting that left two people wounded outside a hip-hop concert in New Jersey.

The shooting happened late on Monday in the parking lot outside the PNC Bank Arts Centre in Holmdel, causing panic among the crowd attending a show by Big Sean and J Cole.

State troopers, using K-9 units and a helicopter, scoured a wooded area near the amphitheatre.

The victims were in critical condition at Jersey Shore University Medical Centre, state police said on their Facebook page early on Tuesday. Their names and ages have not been released.

Eighteen-year-old Omayma Bougdour told the Daily News that gunfire began after an argument broke out in the parking lot. She says "everyone started sprinting and stampeding".

One of the men was "not responsive", and the other was breathing heavily and begging for a drink of water, she said.

Big Sean and J Cole are touring together. They were set to perform at Madison Square Garden in New York on Tuesday.