Huffington reports communication with the US State Department:
"We are working with Mexican authorities to investigate an incident this morning in which two employees of our Embassy in Mexico City came under attack by unknown assailants. They are receiving appropriate medical care and are in stable condition. We have no further information to share at this time," said Victoria Nuland, a State Department spokeswoman in Washington.
UPDATE: 8-24-12 3:40 pm PST
Clarification from AP:
The Mexican Navy said Friday that federal police opened fire on a U.S. Embassy vehicle carrying two U.S. government employees, after the vehicle entered an area where the Mexican officers were conducting anti-crime operations.
The two U.S. Embassy employees were hospitalized, one with a wound to the leg and the other hit in the stomach and hand, according to a government official who spoke on condition of anonymity. The U.S. Embassy said it could not release details of the shooting or the names of the victims, according to AP report.
Two U.S. embassy employees were shot in their vehicle by Mexican federal police when the vehicle came under fire from unidentified gunmen, according to the Mexican Navy.
The shooting appears to have been a case of a confused gun battle that broke out on a rural road just south of Mexico City.
The Navy reported today that the government employees were driving on a dirt road toward a military installation when a car carrying gunmen opened fire on the embassy officials and a Navy officer giving chase.
The federal police patrol vehicle was alerted and arrived at the scene and began to retaliate with open fire. In the confusion, it is unclear whose bullets actually injured the American embassy employees, according to an AP report.
Alerted to the gunfire, a federal police patrol vehicle came to the scene and apparently opened fire. The statement does not make clear whose bullets injured the U.S. workers. The names of the injured have not been released.
The U.S. State Department has not issued a statement. Updates to this event will be posted today.