VANCOUVER, Wash. (AP) — Police say a man is believed to have fired at a Vancouver, Washington, police officer who was chasing him, prompting the officer to return fire. The Oregonian/OregonLive reports the man remains at large. Vancouver police say the officer came upon an apparent shooting about 1 a.m. Tuesday, in which a driver appeared to have shot at another driver from inside his car. Police say the officer followed the first driver, a man, and that the officer fired when the officer thought the man fired. The second driver, a woman, told police she and the man are in a relationship. The man’s car was later seen unoccupied near the interstate in Vancouver.