The administration said one more injured person is receiving treatment at the hospital. Nosheen, Jinnah Hospital's emergency in-charge, confirmed that no foreign national was injured in the accident. The incident comes less than a month after five Chinese nationals and one Pakistani man were killed in a suicide bombing in Bisham in the restive Khyber Pakhtunkhwa province. In Tokyo, Japanese Chief Cabinet Secretary Yoshimasa Hayashi said several Japanese were involved in the incident and that one of them was injured. The Pakistani side did not confirm that information, Kyodo News Agency reported. Karachi is the largest city in Pakistan and the capital of southern Sindh province. Counter Terrorism Department (CTD) in-charge Raja Umar Khattab said the Japanese nationals were travelling in a convoy of three cars. The suicide bomber and his accomplice were already present in the area. When they saw the cars, the suicide bomber attacked, he said.