Authorities have arrested a suspect in connection with the bombing incident that killed two officers and critically injured a police chief, two days ago at a bank in Woodburn.

For now, officials refused to disclose the identity of the suspect or the circumstances of the arrest because an investigation is still ongoing. Authorities only said the suspect was detained Sunday evening in the area of Salem, the capital of Oregon as a result of an "intensive round-the-clock investigation by an interagency task force comprised of federal, state, county, and city public safety agencies."

According to Sheriff Russ Isham of Marion County, authorities believe the person responsible for the attack is the one they currently hold in custody, although it is unsure at this point whether the alleged bomber had accomplices.

The "person of interest" is described as a white male of average build, approximately 30 to 40 years old, with dark, receding hair and a dark beard. Police said the same subject was also thought to have "taken actions in furtherance of his plan" on Thursday and Friday in Salem and in Woodburn.

"Due to the need to protect the integrity of the investigation and the safety of officers continuing to investigate this crime, the Marion County district attorney's office has directed the suspect's name, investigative and arrest details withheld at this time," the Marion County Sheriff's Department said in a statement.
 
The explosion occurred Friday afternoon at a West Coast Bank branch in Woodburn, around 30 miles south of Portland.

Early on Friday, police investigated a bomb threat called into a nearby Wells Fargo Bank branch but found nothing, Wells Fargo spokesman Tom Unger said. However, the bomb threat prompted an investigation which led to the discovery of a suspicious device in the bushes outside the West Coast Bank.

Police officers evacuated the building and took the bomb inside where it exploded damaging the inside of the building and taking the lives of Bill Hakim, a state police bomb-disposal technician, and Woodburn Police Capt. Tom Tennant died. Both men were 51 years old.

Woodburn Police Chief Scott Russell, 46, was critically injured. He was rushed to the Oregon Health and Science University where he remained in the intensive care unit. A West Coast Bank employee suffered minor injuries in the blast. Tennant was a 28-year veteran of the police department, and Russell had served as police chief since 1999.

Asked why officers took the bomb into the bank, Lt. Gregg Hastings, spokesman for the Oregon State Police, said he didn't know. It is also unknown what the motive for the bombing is.

The authorities continue to search for other individuals possibly involved in the bombing, Marion County Undersheriff Jason Myers said. Officials reported they set up a $35,000 reward for information that leads to further arrests.