Pilot sought after U.S. fighter jet crashes

• The F-16 crashes about 200 miles northeast of Hokkaido Island
• The pilot is the sole person aboard, military officials say

(CNN) -- Efforts are under way to retrieve a pilot after a U.S. fighter jet crashed into the waters off northern Japan on Sunday, military officials said.

The pilot was the sole person aboard, according to a statement posted on the Misawa Air Base website.

The F-16 crashed about 200 miles northeast of Hokkaido Island. It belongs to the U.S. base in Aomori prefecture

No more information was immediately available.