Blood has been spilled at a train station in China.<br/> <br />Officials say a single knife-wielding assailant wounded six people in the southern city of Guangzhou.<br/> <br />One witness described the attack.<br/> <br />(SOUNDBITE) (Mandarin) UNIDENTIFIED EYEWITNESS SAYING:<br/> <br />"The assailant just slashed people madly. He didn't target anyone in particular. He just slashed madly."<br/> <br />Police gave no reason for the attack, but China has grown nervous about Islamic militancy.<br/> <br />In March, 29 people were stabbed at train station in Kunming. China blamed the attack on Islamist militants.<br/> <br />As crews scrubbed the plaza, police presence increased dramatically.<br/> <br />Police detained just a single suspect, who had been shot and wounded.<br/> <br />A Chinese Foreign Ministry spokeswoman condemned the attack.<br/> <br />(SOUNDBITE) (Mandarin) CHINESE FOREIGN MINISTRY SPOKESWOMAN HUA CHUNYING SAYING:<br/> <br />"At present, the Chinese police are investigating the case. I believe they will publish the investigation