Oregon ? A bomb explosion at a bank killed both a police officer and a state bomb disposal technician, and state police do not have any suspects, officials said Saturday.

“That person is dangerous and needs to be found as soon as possible,” said Oregon State Police Lt. Gregg Hastings.

The explosion occurred Friday afternoon at a West Coast Bank branch office in the agricultural town of Woodburn, which is nearly 30 miles south of Portland.

Police went to check on a telephoned bomb threat received by a Wells Fargo branch bank in the center of town and found a suspicious device, but that device was determined to be harmless. But police said the investigation there led them to the nearby West Coast office where the bomb was found.