KUNMING, July 22 (Xinhua) -- One person was missing and two others injured after a helicopter crashed into a reservoir in the city of Chuxiong in southwest China's Yunnan Province, local authorities said Sunday.

The accident happened at around 5:45 p.m. Saturday at the Qingshanzui reservoir, local authorities said.

Three people were on board when the helicopter crashed, two of them having been rescued and sent to hospital for treatment. They are currently not in critical conditions, according to local authorities.

Initial investigation showed the helicopter belonged to the Yunnan General Aviation Co., Ltd. Rescuers are searching for the missing person. Probes to the cause of the accident are underway.