A wooden fishing boat thought to be the one that disappeared after it washed ashore last week with eight North Korean men in Akita Prefecture, northeastern Japan, has been spotted at the bottom of the sea, a source close to the matter said Tuesday.

A diver found the wreck of a sunken boat earlier in the day lying broken apart on the seabed, according to the source.

The 20-meter-long North Korean fishing vessel went missing Saturday from the marina where it had been moored.

8 N. Korean men found on boat washed ashore in Japan

8 bodies found on washed-up boat in northern Japan

Japan returns 3 N. Korean fishermen home after rescue from sunken boat