LINDEN, Calif. (AP) - A convicted California serial killer whose maps have led authorities to hundreds of human bone fragments has apparently revealed the location of a third well where he says a victim can be found.

A Sacramento bounty hunter said on Monday that Wesley Shermantine told him about the third well in a telephone call the previous night. The bounty hunter, Louis Padilla, tells the Sacramento Bee the well is close to the two others Shermantine has talked about in San Joaquin County.

The first near the town of Linden has yielded some 1,000 bone fragments. Authorities are searching for the second.

According to Padilla, Shermantine claimed the third well contains a body dumped there by his alleged accomplice, Loren Herzog. Herzog killed himself in Susanville after being released from prison on a technicality.

The two were referred to as the "Speed Freak Killers" for their alleged methamphetamine-fueled killing spree in the 1980s and 1990s.