Mexico City’s chief of police was shot and injured and two of his bodyguards killed in a dramatic assassination attempt early on Friday that he quickly blamed on one of Mexico’s most powerful drug gangs, the Jalisco New Generation Cartel (CJNG).

The city’s public security chief Omar Garcia Harfuch suffered three bullet wounds as he and bodyguards came under heavy fire around dawn in an upscale Mexico City neighborhood, where the attack was captured on security cameras.

Some three hours later, apparently from his hospital bed, Garcia sent out a message on Twitter blaming his injuries and the death of two bodyguards on a “cowardly attack” by the CJNG, a gang notorious as one of the most violent in Mexico.

A third person, a woman apparently on her way to work, was also killed in the gunfire that ripped through the exclusive Lomas de Chapultepec neighborhood. The area is home to many wealthy people and has ambassadorial residences.

President Andres Manuel Lopez Obrador and Mexico City Mayor Claudia Sheinbaum said the attack showed that authorities were putting pressure on criminal gangs in the capital, which has rarely witnessed such brazen outbreaks of violence.

“There will be no turning back,” Sheinbaum told a news conference.