One person was killed and three were injured in an explosion at a village in southwest China's Guangxi Zhuang autonomous region on Thursday morning, local authorities said. The explosion happened at about 7 a.m. in New Jiangtou village in Quanzhou county of Guilin, Xinhua quoted the Guilin municipal public security bureau as saying. One house collapsed and three nearby houses were damaged in the explosion. The cause of the explosion is under investigation.