Man arrested in Mattawa triple homicide
MATTAWA, Wash. — A 24-year-old Mattawa resident has been arrested in Sunnyside in connection with a triple homicide.
Sunnyside police arrested J. Guadalupe Martinez on Tuesday evening at a restaurant while investigating a convenience store robbery.
Several other law enforcement agencies assisted with the arrest, which was announced by the Sunnyside Police Department in a statement Wednesday.
Grant County Undersheriff John Turley says the coroner is working to identify the victims and contact their families.
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