The off-duty police officer who was fatally shot by police in Harlem last night as he chased a burglar with his gun drawn died from a gunshot wound from the chest. But a spokeswoman for the city medical examiner says that though the fatal bullet was recovered from the front of Officer Omar Edwards's chest, the bullet actually entered the left side of his back before hitting his heart and left lung. Another bullet struck his left arm, and a third hit his left hip. The NYPD is still withholding the name of the white cop who fired on Edwards and is conducting an investigation to determine whether officers identified themselves. But Rev. Al Sharpton wants a federal investigation; speaking to 1010WINS, he says sees "a growing pattern of black officers being killed with the assumption that they are the criminals." On that note, City Room takes a compelling look back at the many incidents of white cops shooting black cops over the years, including one such report from 1940 with the antiquated yet eerie headline "Patrolman Slain by Fellow-Police: Negro, Off-Duty and Chasing a Burglar, Felled by Shots of Men from Radio Car."