KIEV, Aug. 26 (Xinhua) -- Three pilots were killed after two L-39 military trainer jets collided in the sky over Ukraine's northern Zhytomyr region, the country's Air Force said Saturday in a statement on Telegram.
The crash took place on Friday, when two aircraft were performing a combat task, the statement said.
The regional prosecutor's office launched criminal proceedings into the crash on charges of violation of flight rules, said the Prosecutor General's Office.
An investigation into the collision is underway.
