Mexico's government said on Saturday that two individuals from the United States who were operating in its territory as intelligence agents were not authorized to carry out their activities. The two men were killed last weekend in connection with a drug raid and they are believed to have been members of the US Central Intelligence Agency (CIA) , according to reports in US media. Two Mexican officials also died in the incident in the northern state of Chihuahua on April 19, which featured a multiple vehicle convoy carrying soldiers and members of the Chihuahua State Investigation Agency. Chihuahua's state prosecutor said the group were on their way back from a raid of clandestine drug labs when their car skidded off the road and into a ravine. The US agents who were killed were "instructor officers" who "were carrying out training tasks." Cooperation between US law enforcement and Mexican security forces within Mexico is historically rare and a politically sensitive topic in the country.…