YAKIMA, Wash - Mario "Gato" Mendez pleads guilty to 1st degree murder.
Mendez is believed to have been an accomplice in a February 2005 double murder.
According to police, Mendez and Junior Sanchez shot 21-year-old Ricky Causer and his three year old daughter Mya in an execution style killing. Causer's girlfriend was also shot while trying to shield the young girl, but survived.
Last Fall, Yakima County Prosecutor Ron Zirkle decided against pursuing the death penalty for both men.
Junior Sanchez's trial will begin next month in Yakima.