Police in Eastern Oregon say they're looking for clues that might identify the person on persons who left an explosive device along the side of a road in the city of Boardman this weekend.
Oregon State Police
Oregon State Police bomb robot (file photo).
The Oregon State Police Bomb Squad used a robot to disable the device. Volunteers found it Saturday while picking up litter along the side of the road.
Boardman Chief of Police Rick Stokoe says the device was a "pipe bomb."
He says it was found just a few blocks from Boardman's City Hall on a street frequently used by people walking into town.
"It was very methodically put together and it contained nails. It was a device that was constructed to inflict injury or cause death," said Stokoe.
Subsequent searches of the surrounding areas failed to turn up any additional devices, he said. Police also conducted a sweep of the local high school prom before giving the all clear.
Stokoe says police don't have any suspects. He says the Oregon State Police Bomb Squad will be assisting Boardman Police in the investigation.
This story originally appeared on Oregon Public Broadcasting.