A bus catches fire in Guangzhou, capital of South China's Guangdong province, July 15, 2014.[Photo/Xinhua]

GUANGZHOU - The suspect involved in the bus explosion in Guangzhou, capital of South China's Guangdong province confessed that he set the vehicle on fire to vent his anger after gambling losses, local police said Wednesday.

The suspect, surnamed Ou from Central China's Hunan province, was caught on Wednesday morning.

The 25-year-old man has confessed to the violent act and is currently in police custody, according to the municipal public security bureau.

The blast that took place on No 301 bus at about 7:40 pm Tuesday left two dead and 32 injured. The wounded were immediately sent to three nearby hospitals for treatment.

The case raised concerns in both the Guangdong provincial and Guangzhou city government.

Guangdong Party chief Hu Chunhua and governor Zhu Xiaodan urged investigation of the case to its fullest extent and make the finding public.

Chen Jianhua, mayor of Guangzhou, arrived in the hospitals to visit to victims and urged doctors to do what they can to heal the wounded.