A blast damaged a residential building in southern China a day after 17 mail bombs killed seven and wounded more than 50. Chinese authorities have ruled out terrorism, according to state media.
The explosion caused damage to a six-story residential building in Liucheng, a county of the Guangxi region, early on Thursday, the official Xinhua news agency reported.
No injuries or deaths were immediately reported.
Thursday also marks China's national day, the start of a week-long holiday during which many government offices and businesses close.
The blast comes a day after 17 letter bombs killed seven people and wounded more that 50 in Liucheng county. The bombs targeted a hospital, market, shopping mall, a bus station and government offices, including a prison.
Authorities said they have identified a 33-year-old suspect, but have not suggested a motive. On Wednesday, police said they were treating the blasts as a "criminal act" and not an act of terrorism.
Small bombs are sometimes used by disgruntled citizens seeking to draw attention in what local media refer to as revenge attacks.
cw/sms (AFP, AP, dpa)