Updated

Police say they are searching for the body of a Thai businessman and prominent critic of the government who disappeared a week ago and is feared dead.

Bangkok police commissioner Lt. Gen. Comronwit Toopgrajank said Wednesday the driver of Akeyuth Anchanbutr has confessed to killing him and says he's buried on a mountain in Thailand's southern province of Phatthalung.

Akeyuth is a critic of former Prime Minister Thaksin Shinawatra and his sister, current premier Yingluck Shinawatra.

Comronwit said no charges will be pressed until the body is found.

Lawyer Suwat Apaipak says he believes Akeyuth was targeted by political opponents.

Akeyuth, 58, fled Thailand after he was convicted of running an investment pyramid scheme in 1983. He returned to Thailand after the statute of limitations ended.