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Mattawa man arrested in connection with December shooting

CHERYL SCHWEIZER | Hagadone News Network | UPDATED 1 year, 5 months AGO
by CHERYL SCHWEIZER
Senior Reporter Cheryl Schweizer is a journalist with more than 30 years of experience serving small communities in the Pacific Northwest. She began her post-high-school education at Treasure Valley Community College and enerned her journalism degree at Oregon State University. After working for multiple publications, she has settled down at the Columbia Basin Herald and has been a staple of the newsroom for more than a decade. Schweizer’s dedication to her communities and profession has earned her the nickname “The Baroness of Bylines.” She covers a variety of beats including health, business and various municipalities. | March 25, 2025 1:55 AM

MATTAWA — A Mattawa man was arrested and booked into the Grant County Jail on Friday in connection with a December shooting. 

Diego Nunez, 20, was arrested on suspicion of two counts of first-degree assault. Nunez allegedly was involved in a Dec. 14 shooting in the 100 block of Columbia Avenue.  

According to a press release issued by the Mattawa Police Department, a suspect alleged to be Nunez, fired multiple shots at a vehicle driving by. The driver of the vehicle drove away from the scene; neither the driver nor the passenger were injured. 

Mattawa Police Chief Alex Zesati said the December shooting wasn’t related to one in February. 

“Both events were isolated incidents,” Zesati wrote in answer to an email from the Columbia Basin Herald.  

The Feb. 11 shooting occurred in the 500 block of Third Street; it’s still under investigation. 

Zesati said the December shooting also is not related to an August 2024 shooting in Desert Aire that left one juvenile dead.  

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