KTVU-TV reports (http://bit.ly/Vw2QvF) that the driver of a garbage truck that had been emptied discovered the human remains in the trash at the North Bay Corp. near Petaluma at about 1:50 p.m.
Sonoma County sheriff's Lt. Dennis O'Leary says law enforcement officials would not identify the body, pending notification of next of kin.
Authorities consider the death suspicious. O'Leary says the man sustained injuries to his face that could have been caused by a garbage truck or front loader.
Deputies are tracking the routes of the trucks that dump refuse at the site to try to understand where the body may have originated.
Information from: KTVU-TV.