Swiss authorities say they've located the wreckage of an air force fighter jet that went missing over the Alps but still have no news on the fate of the pilot.

The Swiss Defense Department said in a statement that the F/A-18C jet that went missing Monday afternoon was found crashed on Tuesday near the Susten Pass in the Alps in central Switzerland.

It says it's only been able to locate the crash site from the air, and that land routes are currently impassable because of weather conditions.

Search crews are still looking for the pilot.

According to parent company Boeing, the first F/A-18 Hornet built by McDonnell Douglas took flight in 1978 and became the first tactical aircraft aimed to conduct both air-to-air and air-to-ground missions.