The family of a Western Washington man shot and killed nearly two weeks ago went to his Liberty Lake apartment to collect his things, only to find it burglarized and his newly purchased assault rifle missing.

Ryan Crews Mumm, 20, had been living in the area attending Spokane Community College, according to news reports.

He was shot and killed July 14 at Blue Stilly Park in Arlington in what police described as a dispute over $20 of marijuana. Suspect Dennis R. Watters, 41, of Tulalip, is in jail.

Mumm grew up in Arlington, and his family lives there. His sister, Jessica Olson, traveled to Liberty Lake to remove his items from the apartment at 22809 E. Country Vista Dr. and found it burglarized. An open rifle case sat on the living room floor. Olson said Mumm had bought a firearm at Cabela’s a couple months ago.

Liberty Lake police Detective Ray Bourgeois obtained a search warrant for Cabela’s firearm records that indicated the gun was a Romarm AK-47 assault rifle purchased by Mumm on Feb. 12. He entered the gun as stolen.

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