SPOKANE VALLEY—Spokane Valley police have identified the mysterious ‘BOOM’ that shuttered the Spokane Valley area Wednesday night.
Officials say they recovered the remnants of an improvised explosive device that was detonated in the area of Sprague and Robie about 10:20 p.m.
Numerous residents called 911 to report a bright flash and loud “boom,” but officers were initially unsuccessful in locating any evidence that might explain the explosion.
Evidence was recovered Friday and will now be submitted to the sheriff’s office forensics unit for examination.
Officers hope to recover fingerprints or other evidence that will lead to identification of the person or persons responsible for constructing the device.
Lt. Matt Lyons said Friday that the IED had a fuse which was lit shortly before it was lifted aloft by a number of helium-filled balloons. While there was no anti-personnel component to the device, it could have caused injuries or a wildfire had it hit the ground before igniting.
Police Chief Rick VanLeuven said Friday afternoon that the incident would be investigated “to the greatest extent of our abilities”.