The Mexican government has asked the United States for information about the alleged links between the director of the Mexico City airport and drug traffickers, Attorney General Marisela Morales said.

Héctor Velázquez Corona, director of Mexico City's Benito Juárez International Airport, "has links to employees of different drug cartels and facilitates their operations," El Universal newspaper reported Tuesday, citing U.S. Justice Department documents.

The Mexican government has requested the documents from the United States, but "as of this time" it has not received "anything with regard" to the airport director, Morales said.

The "U.S. agencies indicated that they do not have anything at this time," the attorney general said.

The Mexican government nevertheless plans to "investigate everything necessary," the AG said.

"We are going to exhaust all of the lines and people that come out of the investigation," Morales said.

Two Federal Police officers under investigation for drug trafficking killed three fellow officers who were about to arrest them at the airport earlier this week.

The shooting occurred around 8:50 a.m. on Monday in the airport's Terminal Two, leaving two officers dead at the scene. The third officer died while being treated at a hospital.

The two officers were being investigated for their alleged links "to the activities of a drug trafficking network," the Public Safety Secretary said.

"The two officers under investigation opened fire to avoid arrest when they spotted the Federal Police's Investigations Unit, killing three federal officers," the secretary said.

"Broad lines of investigation" have been developed in the shooting case, Morales said.

The attorney general, however, declined to comment further on the case because the investigation is ongoing.

Velazquez Corona is not being investigated, but he may be called to give a statement as part of the investigation of a network that smuggles drugs through the airport, Attorney General's Office sources told Efe.

Mexico City's Benito Juarez International Airport is the country's largest airport, handling more than 25 million passengers annually. EFE

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