Update: Additional suspect arrested in Sunnyside man's death

The Yakima County Sheriff's Office arrested another suspect Sunday in connection with the death of a Sunnyside man.

A 22-year-old man was arrested after phone records connected him and a 20-year-old woman to the man's death, said Chief of Detectives Stewart Graham. The woman was arrested Saturday.

The sheriff's office has not released the names of either suspect.

Alberto Gabriel Martinez, 23, was found dead Friday in the trunk of a green 1998 Honda Civic off of Highway 97 on a remote part of the Yakima Reservation.

The Yakima County Sheriff’s Office is asking that anyone with information about this incident call its office at 574-2500 or contact Crime Stoppers Yakima County at 1-800-222-TIPS. Tips can also be sent by text to 274637 plus YAKCO and then the message, or sent online via