A Federal judicial police officer (L) sitting inside a police car, tries to cover the face of a man suspected of killing an assistant of Cuauhtemoc Herrera, a former Mexican anti-drug official who survived a gun attack and who was only injured, in a Mexico City restaurant March 23. Herrera had worked for the anti-drug unit of the Attorney General's office (PGR). Two women were injured in the attack, the PGR spokesman said. Police, who had earlier confirmed the death of Herrera, said five men were arrested.

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