Fighter jet crashes in Switzerland

1 / 2
Rescue teams gather at the site where a military fighter jet has crashed near a military airport in Alpnach, central Switzerland, Wednesday, Oct. 23, 2013. Police told The Associated Press they are investigating the scene near the airport. Swiss media say that authorities have dispatched a helicopter to the scene. The crash also has shut down a nearby railway line. (AP Photo/Keystone, Urs Flueeler)

GENEVA (AP) — The Swiss military says that an F/A-18 fighter jet has crashed in central Switzerland, and the fate of its two crew members is unknown.

Authorities say the crash happened near a military airport in Alpnachstad in the Lake Lucerne region.

The Swiss Defense Department says the cause of the crash remains unknown.

A helicopter and emergency services were deployed at the crash site. A nearby railway line and road were closed.

In the mid-1990s, the Swiss Air Force acquired more than 30 of the F/A-18s. This is the second crash involving one of the fleet. The last jet went down in 1998 in the Swiss Alps, killing the two pilots and injuring several others.