Andy Weng, Associated Press
Chinese paramilitary police officers stand guard Monday along a street in Weng'an County of Guizhou province. Authorities detained hundreds of people suspected of setting fire to police and government buildings in southwest China in protests over a suspected cover-up of a teenage student's death. The unrest is especially sensitive for China ahead of the Beijing Olympics in August.

Chinese paramilitary police officers stand guard Monday along a street in Weng'an County of Guizhou province. Authorities detained hundreds of people suspected of setting fire to police and government buildings in southwest China in protests over a suspected cover-up of a teenage student's death. The unrest is especially sensitive for China ahead of the Beijing Olympics in August.