The pilots of two small planes are in hospital after they crashed mid-air in the US state of Alaska, Sky news reports.
One pilot was in a serious condition while the other had moderate injuries after the collision north of Anchorage on Saturday afternoon.
Neither of the Piper PA-18s was carrying passengers. One of the small aircraft belonged to the Alaska Wildlife Troopers.
Rescuers found the mangled wreckage of the two-seater planes at two crash sites in the woods of the Matanuska-Susitna Valley.
Air investigators do not know what caused the planes to collide.
National Transportation Safety Board spokesman Clint Johnson told KTVA News: “It was a significant crash site.
“One witness said one of the wings actually separated from the airplane after the collision.”
The wildlife trooper was brought by ground ambulance to a local hospital.
The other, more seriously injured pilot was taken to Providence Hospital in Anchorage.