UPDATE: According to the Yakima County Sheriff's Office, a 22-year-old male has been arrested on a charge of second degree murder related to the case. This comes after the arrest of a 20-year-old woman on Saturday night.
Police have not released their names.
An autopsy on 23-year-old Alberto Gabriel Martinez is set for Monday afternoon.
YAKIMA, Wash.--A 20-year-old woman is arrested in connection with the murder of a Sunnyside man.
Yakima County Sheriff's Deputies said the body of 23-year-old Alberto Gabriel Martinez was found in the trunk near Toppenish Friday.
Detectives arrested the woman on Saturday after they said phone records and other factors made her a suspect. Detectives have not released her name and said they're still looking for others involved.
The woman in custody now faces charges of second degree murder.