The LA coroner published the results of an autopsy on the 40-year-old actor who died in a car crash along with a friend last Saturday.
Paul's friend and the driver of the Porsche Carrera GT, Roger Rodas, died of multiple traumatic injuries.
The coroner ruled that both deaths were accidents and said that the injuries occurred when the sports car hit a fixed object in Valencia, north of Los Angeles.
Paul and Roger had been attending a fundraiser organised by the actor's charity Reach Out Worldwide when they decided to take the new Porsche out for a spin.
The handsome actor leaves behind 15-year-old daughter Meadow and his long-term girlfriend Jasmine Pilchard-Gosnell who he had dated for seven years. According to reports, Jasmine was beginning to become like a stepmother to Meadow.
Tributes poured in from family, friends, fans and fellow actors after the news of his death broke.
Paul shot to fame playing undercover agent Brian O'Connor in the Fast & Furious movies alongside Vin Diesel and Tyrese Gibson. They had recently started filming the seventh film of the Fast & Furious series.