HispanicBusiness

Mexican President Felipe Calderon on Tuesday expressed regret for a shooting incident in which federal police fired on a vehicle driven by two U.S. embassy officials last Friday.

The incident, in which the two embassy officials were slightly injured, was under investigation "with rigor and severity," Calderon said at an official event attended by U.S. Ambassador to Mexico Anthony Wayne.

"Whether it was because of negligence, lack of training, lack of reliability or complicity, such events cannot be allowed," said Calderon, adding that the Attorney General's Office was looking into the case.

On Monday, Mexican authorities said 12 federal police agents who chased and shot at the diplomatic vehicle had been detained pending investigations into possible charges of abuse of authority or excessive use of force.

The two U.S. embassy staff members, unofficially identified as Jess Hood Garner and Stan Dove Boss, sustained slight injuries in the shooting. They were taken to a hospital for treatment Friday and are in stable conditions, media reports said.

Several local media sources have speculated the two Americans, whose names have not been officially disclosed, work for the U.S. Drug Enforcement Administration or the Central Intelligence Agency.