It was not immediately clear why the man set off the bomb. Police are investigating the incident, Xinhua said.
Photos posted by CCTV on its microblog showed the area outside the arrivals exit empty and filled with smoke. One photo showed medical staff and police officers hovering over a person, with a wheelchair sitting on its side a few steps away.
Reached over the phone, the airport's news office said it was not aware of the explosion, and airport police declined to answer questions.
