Journalists for Mexico’s Zeta newspaper cover the dramatic increase in violence in the country

Photographer Magarito Martinez, 44, a freelancer who frequently contributes to Zeta, at the scene of a recent drug cartel homicide in the lower-income Tijuana neighborhood of Camino Verde. A man was found killed with a hand-written note that said, “The new ones don’t pardon.” It was was signed “Tijuana New Generation Cartel.”

The Mexican Army leaves the scene of a drug cartel homicide in Tijuana in April.

Crime scene investigators look over the body of a man found killed in a lower-income neighborhood of Tijuana.

Jose Feliz, 70, reads Zeta at his El Chino newstand in Tijuana. To protect reporters, hard-hitting stories are often published under the byline “Zeta investigations,” rather than the writer’s name.

Celia Cardenas Ortiz, left, shown with a family member, washes blood from the steps in front of their Tijuana home, where her husband was shot and killed in broad daylight on April 12.

Isai Lara Bermudez, an investigative reporter for Zeta, covers a homicide in the El Refugio housing development in Tijuana. Lara has been threatened because of stories he wrote.

Adela Navarro Bello, general director of Zeta, in her Tijuana office. Zeta is one of Mexico’s most respected newspapers — and one of the country’s most frequently targeted publications.

A flier offering a reward for information leading to the arrest of drug cartel members hangs in Adela Navarro Bello’s office.

People hold photos of Mexican journalist Miroslava Breach, gunned down while driving her child in the northern state of Chihuahua. In March, four journalists were killed and three others shot and wounded in Mexico. Breach’s death prompted the publisher of El Norte, the Juarez newspaper where she worked, to close.

A member of the Early Warning for Journalists National Collective places crosses in front of the attorney general building in Mexico City. Mexico ranks third in the world for the number of journalists killed, after Syria and Afghanistan, according to media rights group Reporters Without Borders.

A vendor walks in the red light district of La Zona Centro, in Tijuana, where drug cartel-related deaths have been rising.

The scene where an off-duty police officer was ambushed and shot at outside his home in Tijuana. The officer shot back at his attackers and was not injured.

The scene of a homicide in the El Refugio housing development in Tijuana. A male was shot in front of his home in broad daylight. There has been a recent increase in homicides in Tijuana due to the drug trafficking cartels fighting over the local drug market.

A parked Tijuana Police car was set on fire outside of the La Presa Police Station along Presa Hermosillo Street in the Presa Abelardo L. Rodriguez neighborhood in Tijuana.

Contributing to Semanario Zeta, a weekly investigative publication, freelance photographer Magarito Martinez videos a Tijuana Police car that was set on fire outside of the La Presa Police Station in Tijuana.

Colonia Camino Verde where a recent drug cartel homicide took place in Tijuana. There has been a recent increase in homicides in Tijuana due to the drug trafficking cartels fighting over the local drug market.

A Tijuana Police officer looks for two suspects carrying weapons who were reported near the scene where an off duty Tijuana Police officer was ambushed and shots were fired at him outside of his home in the Colinas De La Presa housing development in Tijuana.

Contributing to Semanario Zeta, a weekly investigative publication, freelance photographer Magarito Martinez leaves the scene of an accident where a car plunged into the Abelardo L. Rodríguez Dam in Tijuana.

Contributing to Semanario Zeta, a weekly investigative publication, freelance photographer Magarito Martinez leaves the scene of an accident where a car plunged into the Abelardo L. Rodríguez Dam in the La Presa neighborhood in Tijuana.

The line of cars leaving Tijuana heading north at the San Ysidro border crossing. There has been 417 executions in Tijuana from Jan. 1 to April 20, 2017 according to Semanario Zeta, a weekly publication covering crime and corruption. T