Seoul, South Korea (CNN) -- Two South Korean pilots were killed Friday when their surveillance plane crashed into a mountain in central South Korea, the Ministry of National Defense said.
The Air Force RF-AC surveillance plane disappeared from the radar at 12.30 p.m. Friday, officials said. The plane crashed into a mountain in Jeonju in good weather.
Wreckage from the routine mission was found on the mountain in Jeonju, about 240 kilometers (149 miles) south of Seoul, the Yonhap news agency said.
A committee will investigate and soon release the cause of the crash, the ministry said.
Journalist Lina Yoon contributed to this report.