A man suspected of causing an explosion near a State-owned bank in Central China this month was arrested on Friday, local police said.

According to Wuhan police, Wang Haijian, the 24-year-old suspect, confessed that his motive for the explosion, which left two people dead and 15 injured, was to rob a cash truck, police said.

The blast occurred outside a branch of China Construction Bank about 5:30 pm on Dec 1 in the Hongshan district of Wuhan, capital of Hubei province.

Lang Ping, a spokesman for the Wuhan public security bureau, said Wang was arrested in Wuhan General Hospital of Guangzhou Military Command when he was sleeping in the waiting room of the hospital.

"Wuhan is cold now, and he did not take a lot of personal belongings when he fled, so we concluded he might hide in a warm place," Lang said.