The pair of pilots, Capt. Christos Moulas, 34, and 2nd Lt. Pericles Stefanidis, 27, was among the aviators operating the CL-215 water-dropping planes in the area to combat a wildfire.

A three-day period of mourning was declared for the armed forces.

A video, taken by Greek state television (ERT), shows the plane dropping water on a fire from a very low altitude before the tip of its right wing hits what appears to be a tree. Its right float is then seen dropping from the plane, which then veers hard right and down, before crashing only seconds later.