The Hong Kong actor was filming an ad shoot at the time

Hong Kong actor Andy Lau has suffered a serious spinal injury after falling off a horse in Thailand.

Lau, 55, was shooting an advert in a rural part of Thailand when he was thrown from the horse he was riding. According to the South China Morning post, the horse took fright, throwing Lau to the ground before stepping back onto the actor’s waist, fracturing his spine.

The Internal Affairs star is currently not mobile and has flown back to Hong Kong in a medical plane to receive further diagnosis and treatment.

Filming of the ad has been suspended.

“Mr Andy Lau was shooting a commercial in Thailand on Jan. 17, 2017 when he had a little accident and fell off a horse, resulting in a pelvic laceration. A medical team took care of him and everything is fine now. Please do not worry,” said a statement from Topman Global, one of Lau’s companies.

Lau has been promoting his latest film, The Great Wall, which will be released in the west on 17 February. The actor recently said that winning awards was “not important” to him.