The Carbon County Sheriff's Department is asking for information about the death or the last few days in the life of Christopher Robertson.
Robertson's decomposed body was found in a sewer south of Price last December. Investigators were able to identify him by a medical device that had been implanted in his body before his death, according to Detective David Brewer.
The man had been missing for about three weeks prior to the discovery of the body.
Brewer said anyone who had seen Robertson before his disappearance, or who has information about what might have happened to him, should contact the department.
Information will be kept confidential, the detective added.