Assailants kidnapped and killed three police officers in the Mexican border city of Acuna, authorities said

Acuna Public Safety Department said in a statement that the three were on patrol in the same unit when gunmen kidnapped them. The officer's bodies were found an hour later in a residential area of Acuna, which is across the border from Del Rio, Texas. They had been shot and their hands were handcuffed, the police department said. Authorities say that the Zetas and the Sinaloa drug cartels are fighting each other to control smuggling routes in the state of Coahuila, where Acuna is located. Recently, gunmen killed a federal prosecutor for the state of Coahuila when he was about to leave his home in the city of Torreon and gunmen set a fire at the office of the Torreon newspaper El Siglo and fired shots at it. Authorities in the neighboring state of Durango said that soldiers dug up the remains of seven people from a pit. Durango state prosecutors said that troops found the remains in the town of San Juan del Rio, about 60 miles north of the state capital, the city of Durango. More than 400 bodies have been found in a series of clandestine graves in Tamaulipas and Durango states since April 2011. They are believed to be a result of turf battles between drug cartels. In Hidalgo, the home state of Zetas leader Heriberto Lazcano, state police chief Damian Canales said that authorities detained eight local police officers for working for the Zetas. Canales said that six of those detained were officers for the town of Actopan and two for the state capital of Pachuca. He said that they were detained after the arrest of the former police chief in the town of Arenal, who authorities say was in charge of recruiting police officers to work for the Zetas. Canales said that the Pachuca city police officers told investigators the Zetas paid them about $360 a month.