From the Richland Police Department facebook page and case file 18-2183:

The rifles pictured below are related to a case that is under investigation and could possibly be stolen. We are posting them to ask the public if anyone recognizes them as missing. If you have any information please call 509-628-0333.

Richland PD Facebook 10-20-18 - 1
Richland PD Facebook 10-20-18 - 2
Richland PD Facebook 10-20-18