(Portland, OR) -- Portland Police Chief Larry O'Dea is expected to retire. O'Dea is under investigation after it came to light that he shot a friend with a .22-caliber rifle during an April hunting trip. Officials say O'Dea had initially said that the friend, Robert Dempsey, accidentally shot himself while trying to holster a pistol. Dempsey wasn't seriously injured. Mayor Charlie Hales is slated to hold a news conference later today.