BEIJING - Ji Zhongxing, who was suspected of setting off a home-made explosive at the Beijing Capital International Airport, has been arrested, police said Tuesday.

The Chaoyang district procuratorate approved Ji's arrest on Monday, the airport police said.

Ji, a 33-year-old wheelchair-bound man from Shandong province, confessed that he prepared and carried the explosive and leaflets to Terminal 3 of the airport and triggered the explosive device on July 20, the police said.

Ji said he did this for personal purposes, the police said.

He has been in custody since July 21.

According to earlier reports, the explosion caused no casualty except Ji who injured himself.