A branch of West Coast Bancorp of Lake Oswego, Ore., will be closed indefinitely after being damaged in an explosion late Friday that killed two police officers.

Another officer and two bank employees were injured when a bomb went off inside the branch, in Woodburn.

The $2.5 billion-asset company said Saturday that state bomb technicians were called to the bank after a suspicious device was found outside the branch. "When the device was opened in the lobby, the bomb detonated," the company said.

Tom Tennant, the Woodburn police captain, and William Hakim, an Oregon State Police bomb technician, both 51, were killed in the blast, the Woodburn Independent reported Monday. Police said they did not have any suspects.

It is not known why the bomb was brought into the bank branch. No records were destroyed, but the branch will remain closed until damages are repaired.

Earlier Friday a suspicious package was reported outside a Wells Fargo & Co. branch not far from the West Coast branch but was found to be harmless.

West Coast has opened accounts in the names of those killed or injured in the blast and is accepting donations at any of its branches.

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