On the afternoon of August 19, 2021, Antonio Quiterio Magallon, 54, was found dead from a gunshot wound in a pasture behind his home in the 21000 block of Road 24.7 Southwest, on the rural outskirts of Mattawa, Washington. Family members discovered him and emergency personnel pronounced him dead after being called to the scene around 2 p.m.

Investigators with the Grant County Sheriff’s Office focused on a neighbor after reviewing surveillance footage from Magallon’s property. The video reportedly shows Magallon spraying weeds in his pasture when 56-year-old Juan Manuel Silva Murillo shot him twice from a fence line, then climbed over the fence and continued firing as Magallon tried to move away. The footage reportedly shows Silva Murillo reloading at least twice and firing a total of at least 17 rounds.

Detectives say Silva Murillo agreed to surrender by phone and was arrested that night; he initially faced suspicion of second-degree murder and the charge was later upgraded to first-degree murder. Investigators reported an ongoing dispute between the men over property and cattle that may have been the motive. Does anyone with knowledge of the Mattawa area or these families have information that could help clarify what led to this shooting?