BEIJING - Chinese state media say a Hong Kong book publisher whose disappearance sparked international interest voluntarily surrendered months ago to mainland authorities.

Gui Minhai said in detention that he surrendered in October, 10 years after he fled China after killing a woman while driving drunk, according to the official Xinhua News Agency.

Gui's sensational gossip books are about the private lives of top Chinese leaders, and friends have suspected he was abducted for political reasons by Chinese agents from his apartment in Pattaya, Thailand, and smuggled into China. He is a naturalized Swedish citizen, and his disappearance prompted questions from the Swedish Embassy.

In the purported confession, Gui said he did not want any more "malicious media hype" over his case or any further assistance from Sweden.