Organized crime members — apparently drug traffickers — were behind a brazen daylight attack that killed a state police chief and one of his officers in the border city of Nuevo Laredo, presidential spokesman Ruben Aguilar said Wednesday. He said federal prosecutors may take over the case of the Tuesday attacks in Nuevo Laredo, across the border from Laredo, and said the killings — like others that have occurred in the past two years — were apparently related to internal struggles for control of the drug cartels. Full Story