FILE - In this Aug. 24, 2012. file photo, an armored U.S. embassy vehicle is checked by military personal after it was attacked by unknown assailants on the highway leading to the city

 

              FILE - In this Aug. 24, 2012. file photo, an armored U.S. embassy vehicle is checked by military personal after it was attacked by unknown assailants on the highway leading to the city
FILE - In this Aug. 24, 2012. file photo, an armored U.S. embassy vehicle is checked by military personal after it was attacked by unknown assailants on the highway leading to the city of Cuernavaca, near Tres Marias, Mexico. A senior U.S. official says there is strong circumstantial evidence that Mexican federal police who fired on a U.S. embassy vehicle, wounding two CIA agents, were working for organized crime on a targeted assassination attempt. (AP Photo/Alexandre Meneghini, File)