(Oregon City, OR)  --  An investigation is ongoing into an officer-involved shooting following a police pursuit in Oregon City.  Police say the pursuit started on I-205 Saturday night and stopped at the onramp from Highway 213.  The Clackamas County District Attorney's Office says the suspect, Gerald Barnes the second, fired at officers before they returned fire.  He's charged with attempted aggravated murder.  Barnes was treated at a hospital and booked into jail.  An Oregon City Police officer suffered serious, but not life-threatening injuries.