Rancho Cordova Police are warning residents about a letter that claiming to provide a history and profile of the East Area Rapist.

The East Area Rapist was active in Sacramento between 1976 and 1978. He is believed to have killed several people, including a couple from Rancho Cordova. Afterwards, he continued to terrorize people in the east and south Bay Area before murdering several others in Southern California.

Police say the letter, asking for help identifying the East Area Rapist, is not an authorized document from any law enforcement agency.

Any letters from RCPD or any other law enforcement agency will be properly labeled as such and handed out through official channels.

The Sacramento County Sheriff's Department is seeking help from anyone in learning more about the identity of the East Area Rapist. You can help by visiting them online.