David Dahlen was arrested for allegedly ramming a stolen truck into a police officer.. An attempted murder suspect in Portland accused of ramming a police officer with a stolen pickup truck remained on the lam Monday, two days after escaping from a holding cell following his initial arrest. The search continues for 24-year-old David Dahlen, who was initially located and arrested Saturday by East Precinct officers. He was apprehended at about 1:30 p.m. after a brief foot pursuit in the area of Southeast 101st Avenue and Southeast Insley Street and was transported to the Detective Division in the Justice Center...