Smoke?emits?from a?rear engine of Flight ZH 9969, a A319 passenger jet at Shenzhen Bao'an International Airport in Shenzhen of?Guangdong province on Aug 15, 2013.[Photo/CFP]

Twelve people have been injured after an engine caught fire on take-off?at Shenzhen Bao'an International Airport in Shenzhen,?South China's Guangdong province on Sunday evening, chinanews.com reported.

Twelve passengers suffered slight injuries during the emergency evacuation of flight ZH 9969, a A319 passenger jet operated by Shenzhen Airlines to Beijing just after 6 pm. ?

The injured?are?under treatment. Other passengers onboard were properly resettled. ??

The cause of the accident is still under investigation, but it is reported the plane's power system failed and sparked a fire.

The accident didn't affect other flights in the airport.