U.S. Attorney General linked to cover-up in House of Death mass murder

The ongoing cover-up of a U.S. government informant's participation in mass murder in a Mexican border town extends to the highest level of the U.S. Justice Department, recently obtained public documents show.
Court testimony from DEA Administrator Karen Tandy confirms that the attorney general at the time, John Ashcroft, was briefed on the U.S. prosecutor's and federal agents' complicity in the murders. However, to date, no one has been prosecuted for these "House of Death" homicides.
The informant helped carry out the slayings of a dozen people—all tortured, murdered and buried in the backyard of a house in Juárez, a sister city to El Paso, Texas. The murders occurred between August 2003 and mid-January 2004 while the informant was under the watch of federal agents and a U.S. prosecutor. The U.S. law enforcers allegedly allowed the homicides to occur in order to make a drug case against a narco-trafficker.
Tandy's testimony reveals that the trail of the cover-up extends from the U.S. Immigration and Customs Enforcement (ICE) agents who handled the informant, to the U.S. Attorney's Office in San Antonio, to the administrator of the DEA and top officials within ICE, to the top gun in the U.S. Department of Justice in Washington, D.C.