The serious car crash that sent 5-star hooper Alijah Arenas to the hospital with serious injuries was likely caused by excess speed, law enforcement sources tell TMZ Sports.
The Los Angeles Police Department was on the scene of the 5 AM crash, which occurred along a two-lane residential roadway in the Winnetka neighborhood of the San Fernando Valley, in a 40 MPH zone.
18-year-old Alijah was alone in the Cybertruck -- owned by his father, ex-NBA star Gilbert Arenas -- at the time of the accident .