Beijing ? China has arrested nine Buddhist monks and accused them of planting a homemade bomb in a government office building in Tibet last month, the official Xinhua News Agency said Saturday.

There were no known deaths or damage from the first reported bombing since anti-government protests by monks began March 10 in the Tibetan capital Lhasa.

Xinhua said that nine monks from Tongxia monastery confessed to taking part in the bombing in Gyanbe Township in Tibet on March 23.