BEIJING (AFP) - At least six people were killed and several more injured when an explosion hit an Internet cafe in southwest China on Saturday evening, state media reported. The blast ripped through the cafe in Kaili city in Guizhou province at about 10:30 pm (1430 GMT), the state-run Xinhua news agency said, citing rescue workers and the provincial public security department. It said rescue work was ongoing but no further details had yet emerged.