Thai Red Bull heir, Vorayuth Yoovidhaya, is suspected to have been driving faster than initially thought when he got involved in a 2012 hit-and-run accident.

He had allegedly hit a policeman with his grey Ferrari before fleeing the scene, and was charged with drunk driving, negligent death and committing a hit-and-run.

All chargers were dropped

On July 24, however, all charges against Vorayuth were dropped without any clear reasons.

The decision to drop the charges stirred a public uproar in Thailand.

The move was also questioned in parliament on July 29, causing a new investigation to be launched.

New evidence found

According to Reuters, new evidence connected to the case has been discovered.

It was initially believed that the speed of Vorayuth’s Ferrari during the accident was allegedly 80 kph (50 mph).

But based on an expert opinion that was not previously included in the police report, the speed was closer to 170 kph (105 mph).

The deputy spokesman of Thailand's Attorney General’s office, Prayut Phetkun, said via Reuters: "This case is not over because the law says if there is new evidence, we are able to proceed."

Key defence witness died

On July 30, a defence witness to the case was killed in a motorbike accident in the northern city of Chiang Mai.

Charuchart Martthong was a key witness who had testified that Vorayuth was not speeding at the time of the accident.

The police are investigating the cause of his accident.

Top image from Daily Mail & by Alexander Ramsey via Unsplash.