All drivers are race officials have been cleared of any wrongdoing in the findings of an FIA investigation into the crash that killed Anthoine Hubert.

The report details the events that took place on the second lap of Saturday's feature race, which began with the French Formula 2 racer crashing at the top of Eau Rouge/Raidillon as he and Ralph Boschung reacted to Guiliano Alesi hitting the barrier earlier in the corner due to a puncture.

Hubert's car then rebounded into the path of Juan Manuel Correa, who had also lost control of his car due to debris left by Alesi, with the American unable to avoid the high-speed collision.

In total, the incident, from Alesi's crash to Correa's car coming to a stop upside down partway down the Kemmel Straight, lasted a total of 14.6 seconds.

"The dynamics of the car-to-car impact in terms of speed and trajectory were such that an extremely high level of energy was transferred and dissipated, translating into non-survivable trauma to Anthoine Hubert and very serious injuries to Juan Manuel Correa," a summary concluded.

"There was no single specific cause but multiple contributory factors giving rise to the severity of the accident were identified, following a detailed analysis of the various phases of the accident.

"The investigation found no evidence that any driver failed to react appropriately in response to the yellow flag signal or to the circumstances on track.

"The reaction of marshals and race control in deploying signalling and rescue services in relation to the accident is considered timely and good."

Indeed, the FIA report noted medical personnel were on the scene evaluating Hubert just 54 seconds of the red flag being called and Correa was also reached 15 seconds later.

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While Hubert died of his injuries, Correa survived and has undergone multiple surgeries to repair his right leg and his rehabilitation continues in Miami.

“Safety improvement is a continuous process,” the FIA public statement began in conclusion.

“Therefore conclusions drawn from this accident and others like it from around the world will be integrated into the ongoing work of the FIA to further develop motorsport safety.”