A Federal Police spokesman says he 's been told not to comment . All the information is to come from Mexico 's government . 2 U.S. Embassy guards were wounded Friday . Federal Police were involved in the shooting , officials said .
A Federal Police spokesman says he 's been asked not to comment . All the information is to come from Calderon 's office . 2 U.S. Embassy employees were wounded Friday . Federal police were involved in the shooting , Mexico says .