Beijing: An overseas Tibetan news service says Chinese police have detained a Tibetan writer in a western county hit by anti-government protests as China's crackdown against persisting unrest spreads.

Report says that more than 20 police officers took Gangkye Drubpa Kyab from his home in Serthar County’s main town on Wednesday night and that he has not been released.

Police and government officials in Serthar said they had not heard about the case.

Tibetans and Chinese authorities have been caught in a cycle of protest and repression over the past year. More than 20 Tibetans have set themselves on fire to protest repressive measures, and security forces have responded by further tightening controls.