To the security screeners at the Yakima Air Terminal, the device in the belongings of a departing passenger looked like a grenade. That prompted the brief evacuation of about a dozen people from the terminal Tuesday evening.
Military bomb technicians from the Army's Yakima Training Center were called.
Yakima police Sgt. Tim Bardwell says the item carried by a 23-year-old California man was actually a commercially purchased marijuana grinder.
The man was arrested for investigation of drug possession. Bardwell says the grinder contained a substance that appeared to be marijuana.