One person critically injured, transported to hospital, after his motorcycle, traveling with a group of other riders, collides with a car on Richmond Ave. in Graniteville on Staten Island.

A motorcyclist was severely injured Tuesday evening in an accident on Richmond Avenue, just outside the NYPD's 121st Precinct stationhouse in Graniteville.

The motorcycle rider was transported to Staten Island University Hospital, Ocean Breeze, in critical condition, police said.

About a dozen other motorcyclists on the scene said they knew the victim but declined to comment on the accident. They appeared to gather some of the victim's belongings, including a helmet.

An employee of the Shop Rite on Richmond Avenue where the accident occurred said he saw the victim lying on the ground following the crash, and noted he appeared to be breathing.

No charges have been filed and the motorcyclist, who was wearing a helmet, remains in critical condition, a police spokesman said.

The motorcyclist was injured when his motorcycle inadvertently made contact with a sedan in the parallel lane, the spokesman said.

He lost his balance and fell onto the road.

The driver of the sedan remained on the scene and the accident still is under investigation the spokesman said.