WASHINGTON (AP) — Two District of Columbia police officers assigned to the unit that provided an escort to actor Charlie Sheen have been transferred. The city's police chief says the transfers are unrelated.An internal police document obtained Wednesday by The Associated Press shows that Lt. Stuart Emerman and Capt. Robert Atcheson have been removed from the department's Special Operations Division.Officers from that division gave Sheen an escort April 19 from Dulles International Airport to a performance at DAR Constitution Hall. The escort drew attention after Sheen tweeted about it and posted a photograph showing a speedometer register about 80 mph.Chief Cathy Lanier said in a statement that none of the transfers "were disciplinary in nature related to this investigation." She said transfers are announced weekly and the Sheen investigation continues.