A search team of federal authorities starts the inspection of the site where human remains are allegedly located, and that could be related to organized crime, at Lomas Encantadas neighborhood, in the border city of Tijuana, northwest of Mexico, March 13, 2014. Federal authorities found on Thursday an allegedly "narco grave" at Lomas Encantadas neighborhood, where it is supposed that members of drug gangs burned corpses of man and women during 2007, according to local media. (Xinhua/Guillermo Arias)

 A search team of federal authorities starts the inspection of the site where human remains are allegedly located, and that could be related to organized crime, at Lomas Encantadas neighborhood, in the border city of Tijuana, northwest of Mexico, March 13, 2014. Federal authorities found on Thursday an allegedly "narco grave" at Lomas Encantadas neighborhood, where it is supposed that members of drug gangs burned corpses of man and women during 2007, according to local media. (Xinhua/Guillermo Arias)

A search team of federal authorities starts the inspection of the site where human remains are allegedly located, and that could be related to organized crime, at Lomas Encantadas neighborhood, in the border city of Tijuana, northwest of Mexico, March 13, 2014. Federal authorities found on Thursday an allegedly "narco grave" at Lomas Encantadas neighborhood, where it is supposed that members of drug gangs burned corpses of man and women during 2007, according to local media. (Xinhua/Guillermo Arias)

A search team of federal authorities starts the inspection of the site where human remains are allegedly located, and that could be related to organized crime, at Lomas Encantadas neighborhood, in the border city of Tijuana, northwest of Mexico, March 13, 2014. Federal authorities found on Thursday an allegedly "narco grave" at Lomas Encantadas neighborhood, where it is supposed that members of drug gangs burned corpses of man and women during 2007, according to local media. (Xinhua/Guillermo Arias)

A search team of federal authorities starts the inspection of the site where human remains are allegedly located, and that could be related to organized crime, at Lomas Encantadas neighborhood, in the border city of Tijuana, northwest of Mexico, March 13, 2014. Federal authorities found on Thursday an allegedly "narco grave" at Lomas Encantadas neighborhood, where it is supposed that members of drug gangs burned corpses of man and women during 2007, according to local media. (Xinhua/Guillermo Arias)

A search team of federal authorities starts the inspection of the site where human remains are allegedly located, and that could be related to organized crime, at Lomas Encantadas neighborhood, in the border city of Tijuana, northwest of Mexico, March 13, 2014. Federal authorities found on Thursday an allegedly "narco grave" at Lomas Encantadas neighborhood, where it is supposed that members of drug gangs burned corpses of man and women during 2007, according to local media. (Xinhua/Guillermo Arias)

A search team of federal authorities starts the inspection of the site where human remains are allegedly located, and that could be related to organized crime, at Lomas Encantadas neighborhood, in the border city of Tijuana, northwest of Mexico, March 13, 2014. Federal authorities found on Thursday an allegedly "narco grave" at Lomas Encantadas neighborhood, where it is supposed that members of drug gangs burned corpses of man and women during 2007, according to local media. (Xinhua/Guillermo Arias)

A search team of federal authorities starts the inspection of the site where human remains are allegedly located, and that could be related to organized crime, at Lomas Encantadas neighborhood, in the border city of Tijuana, northwest of Mexico, March 13, 2014. Federal authorities found on Thursday an allegedly "narco grave" at Lomas Encantadas neighborhood, where it is supposed that members of drug gangs burned corpses of man and women during 2007, according to local media. (Xinhua/Guillermo Arias)