Mexico City Mayor Clara Brugada has announced that authorities arrested 13 people for their alleged roles in the May attack that killed two high-ranking officials in the Mexican capital.

Brugada did not identify the suspects on Wednesday, but she said three were involved directly in the shooting.

“In this operation, 13 people were arrested, including three people who directly participated in the murder, and others related to the logistical preparation of the event,” she told reporters.

The daytime shooting of two of Brugada’s top aides by gunmen on motorbikes shocked the city, seen as a relative pocket of safety compared to the rest of the country.

The victims were Brugada’s personal secretary Ximena Guzman and adviser Jose Munoz.

“In memory of our colleagues and out of respect for

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