 Mexican officials stated in September that the U.S. government still had not briefed them on what went wrong nor had they apologized.Due to several failed attempts at coordinating with Mexican law enforcement in the apprehension of suspected arms traffickers in the Wide Receiver and Hernandez cases, and concerns about widespread corruption, details of Operation Fast and Furious were not shared with Mexican government officials, and they were deliberately kept out of the loop after related firearms began turning up at crime scenes and in criminal arsenals in 2010.The U.S. Embassy in Mexico and the ATF Mexico City Office (MCO) were also kept in the dark.