Mid-air collision of S.Korean trainer planes kills four

Debris of South Korean air force planes that collided mid-air during a training exercise, is seen in Sacheon, South Korea, April 1, 2022. Yonhap via REUTERS

SEOUL (Reuters) -Two South Korean air force planes collided in mid-air on Friday during a training exercise, killing four pilots, authorities said.

A total of 130 troops, 95 police officers and 60 firefighters as well as three helicopters have begun a search at the crash site, the Yonhap news agency said, citing local government officials.