Sean Kingston was going “really fast” on his personal jet ski when he crashed into a bridge, according to his girlfriend and passenger on the vehicle, reported TMZ.

Kingston, still recovering from his severe injuries, remains in the intensive care unit (ICU) of a hospital.  Kingston’s friends and his rescuer both reported that the hip hop star was coughing up blood after the crash.

So far, authorities believe alcohol played no part in the accident.

Jorge Pino, a spokesperson for the Florida Fish and Wildlife Commission, said “nine times out of 10, recklessness on the water involving personal watercraft contributes to accidents,” reported the Hollywood Gossip. 

While Jorge wasn’t specifically commenting on Kingston and it remains unclear what exactly happened, experts agree that jet ski operators generally play a role in causing serious accidents.

According to the National Transportation Safety Board (NTSB), inattention, inexperience, and inappropriate speed are the primary causes of accidents.  Moreover, having a passenger may contribute to inattention.

Kingston’s girlfriend told TMZ that she believes Kingston tried to turn away from the bridge at the last second.  However, the Personal Watercraft Industry Association (PWIA) recommends taking action early to avoid collision as jet skis do not have brakes.

Nearly 5 percent of the injuries on personal watercraft are fatal. Half of the accident injuries are to the lower extremities, and most of these involve broken bones.