Kevin Hart suffered major back injuries from a September car crash in Los Angeles. He has been hospitalized for about 10 days before being released to have physical therapy.

While there are speculations about what caused the accident, new details have emerged that sheds light on what really happened.

The Real Cause

The reason behind the frightening car accident involving Hart, his friends, Jared Black and Rebecca Broxterman, has been determined. California Highway Patrol (CHP) confirmed on TMZ  that the cause of the accident is reckless driving.

A detailed crash report obtained by TMZ has also been released regarding the various reasons why the incident happened.

The report revealed that Hart had made an extensive modification on the car's body, such as adding a 6.4L Hemi V-8 engine, sport tires and custom gauges. It was also cited that there was no anti-lock braking system installed.

Regarding the safety seat belts, the report states that folds and crease marks have been found on the belt area. It indicates that the seatbelts were intact and not used.

Cops added that even if the seat belts were used during the time of the collision, it would do little due to the "excessive slack in the belts" caused by improper wearing.

The report also says that Broxterman was stuck in between the top of the right passenger seat and vehicle's damaged roof while facing the windshield. It notes that the car was "not outfitted to carry rear-seat passengers."

Hart used plastic storage boxes to change the backseats.

Hart's 1970 Plymouth Barracuda, which possesses a powerful 720-HP engine, collapsed after Jared Black -- who was driving the car -- accelerated and lost his control. It led the car to spin and end up crashing through a fence. 

The vehicle was dismantled by the CHP to keenly investigate the cause of the accident, breaking it down into small metal pieces to assess the evidence and write a report.

The Return

After suffering back injuries and recovering at home, Hart has come back to work this week. He took part in shooting promotions for his upcoming film, "Jumanji: The Next Level."

However, according to his attorney Andrew Brettler, the actor is not yet officially returned to work

"Hart has not been in full costume for these shoots and he's not walking much for them either-sitting through most of the day even though he can walk on his own," Brettler said in a statement.

"Hart doesn't anticipate going back to work full time until early next year, assuming everything stays on track with his physical therapy."

Hart, on the other hand, is not blaming Jared for the accident. He then showed nothing but love for the two -- who are also a couple -- and wished them a speedy recovery.

This might not be the best year for Hart due to the tragic experience, but there are still numerous things to be appreciated. Aside from his upcoming Jumanji sequel, the 40-year-old comedian will also be seen in the comedy-drama movie "Fatherhood."

Jumanji: The Next Level will be officially available in cinemas on Dec. 13, 2019.