SEOUL, Sept. 1 (Yonhap) -- Two South Korean Army military helicopters made emergency landings after they collided during flight training in a northern city, the armed service said Thursday, with none seriously hurt.

The homegrown Surion helicopters collided at a training site in Pocheon, 46 kilometers north of Seoul, at 12:16 p.m. Of the total 18 service members aboard the choppers, one suffered an injury to his head.

The Army is trying to ascertain the exact cause of the collision, officials said.