During the sighting lap before the race at the Sepang International Circuit, Jose Antonio Rueda ran into the back of the 20-year-old CIP Green Power rider, with Dettwiler flying off his motorcycle and landing heavily on the asphalt.

Both riders required trackside treatment before being airlifted to hospital, with Dettwiler suffering injuries to his spleen and lungs.

“According to the doctors, Noah’s condition is now stable and no longer critical,” the team said in a statement.

“He will continue to be monitored closely in the intensive care unit,” the team said.

Moto3 champion Rueda, who turned 20 today, had suffered a fracture in his hand and bruising on his lungs.

His team Red Bull KTM Ajo said his condition is improving.

“On Monday, the Red Bull KTM Ajo rider was transferred to a private hospital to continue his recovery and to monitor the bruising on his lungs more closely, which are recovering well,” the team said.

“As a result, doctors believe it is possible for him to return to Spain tomorrow to undergo surgery on his right hand in Barcelona in the coming days,” the team said.