Javier Valdez: Murder, Convictions, and Stalled Extradition

Mexican investigative journalist Javier Valdez Cárdenas was shot and killed on May 15, 2017, in Culiacán, Sinaloa, by gunmen later tied to the Sinaloa Cartel. Two men have been convicted in the murder of the journalist Javier Valdez, and a third suspected gunman was found dead months after the attack. The man Mexican prosecutors accuse of ordering the killing, former cartel operative Dámaso López Serrano, is in U.S. custody on drug charges and has not been extradited to face trial in Mexico.

What Happened on May 15, 2017

Around noon that day, Valdez left the offices of Ríodoce, the investigative weekly he co-founded in 2003, and walked to his car. Gunmen intercepted him, pulled him from the vehicle, and shot him at close range. He was hit at least 12 times and died at the scene. The attackers fled in his car, which was later recovered abandoned. His laptop and mobile phone were missing.¹

He was 50. At the time, he was the Sinaloa correspondent for the national newspaper La Jornada, a contributor to AFP, and the author of eight books on the drug trade and its human cost.² In 2011, the Committee to Protect Journalists had given him its International Press Freedom Award.³

Why He Was Targeted

Valdez had reported on organized crime in Sinaloa for decades, and Ríodoce had drawn retaliation before. In September 2009, days after the paper ran a series on drug trafficking, assailants threw a grenade into the newsroom. The investigation produced no results.³

The immediate backdrop to his murder was a violent split inside the Sinaloa Cartel. After the 2016 arrest and extradition of Joaquín “El Chapo” Guzmán, a power struggle erupted between Guzmán’s sons and a faction led by Dámaso López Nuñez (“El Licenciado”) and his son Dámaso López Serrano (“El Mini Lic”). Valdez had been covering that conflict. He began receiving death threats in February 2017 and was still voicing concern about his safety in March.¹

When Mexico’s Special Prosecutor for Crimes against Freedom of Expression (FEADLE) took over the case, it identified his journalism as the principal line of inquiry from the start.¹ Then-President Enrique Peña Nieto personally announced that federal prosecutors would handle it.⁴

Who Has Been Convicted

Investigators built the case using a protected witness, surveillance footage, and intercepted phone communications.⁵ Three men were identified as direct participants in the attack.

Heriberto Picos Barraza, known as “El Koala,” was identified as the driver who took the gunmen to the Ríodoce offices. He was arrested in April 2018 and sentenced on February 28, 2020, to 14 years and eight months in prison.⁶

Juan Francisco Picos Barrueta, “El Quillo,” was identified as one of the two triggermen. Arrested on June 6, 2018, he was convicted of murder by a federal judge in Culiacán on June 8, 2021, and sentenced on June 17, 2021, to 32 years and three months. The court found the killing was motivated by Valdez’s journalistic work.⁶⁷

The other alleged triggerman, Luis Idelfonso Sánchez Romero (“El Diablo”), never stood trial. His charred body was found inside a vehicle in Sonora in September 2017, four months after the murder.⁵

According to evidence at Picos Barrueta’s trial, the murder was ordered by Dámaso López Serrano in retaliation for a column Valdez had written about him and for his coverage of the cartel’s internal war. Investigators reportedly determined that the killers were rewarded with a silver pistol engraved with images of López Serrano and his father.⁶⁵

Why the Alleged Mastermind Has Not Been Extradited

López Serrano surrendered to U.S. authorities on July 27, 2017, roughly two months after Valdez was killed. He pleaded guilty to drug trafficking and money laundering, served a five-year sentence, and was released in 2022.⁸ Mexican authorities issued an arrest warrant for him in January 2020 for ordering Valdez’s murder and have repeatedly sought his extradition since.¹

Those requests have gone nowhere. Former Mexican Attorney General Alejandro Gertz Manero said U.S. officials declined the requests on the grounds that López Serrano was providing information about the Mexican underworld.⁹ Mexican officials have said they pressed the issue “on countless occasions” and were denied.¹⁰

In December 2024, the FBI re-arrested López Serrano on new charges tied to a fentanyl distribution scheme. In February 2026, a federal judge in Virginia sentenced him to an additional five years in prison, running concurrently with a five-year term for violating his supervised release, followed by five years of supervised release.¹⁰⁹ That sentence keeps him in U.S. custody and out of Mexican reach for years to come. Mexican President Claudia Sheinbaum has said her government will keep pressing for extradition. A spokesperson for the U.S. attorney’s office declined to say whether the government would support that request.

The Continuing Push for Accountability

Valdez’s widow, Griselda Triana, has pressed publicly for justice since the killing. On the third anniversary of the murder in 2020, she published an open letter distributed by Mexican outlets and the Committee to Protect Journalists. “Many victims lost their voices when he was killed because he would write about women who were searching for their missing children,” she wrote. “They got rid of him because someone did not like what he wrote.”¹¹

On May 15, 2026, the ninth anniversary of the killing, the Committee to Protect Journalists, Reporters Without Borders, ARTICLE 19, and Propuesta Cívica, the legal organization representing the Valdez family, issued a joint call urging Mexican authorities to secure López Serrano’s extradition and put him on trial for murder.¹² The case remains active in the Mexican courts.

Convictions in cases like this are rare. The organization Article 19 has reported that crimes against journalists in Mexico carry an impunity rate of 99.6%, and the International Press Institute has described the country as the deadliest place in the world to work in the media.⁵ That two of Valdez’s attackers were tried and sentenced puts his case in a small minority. Whether the man accused of ordering the killing ever faces a Mexican court is a question that now rests with the U.S. Department of Justice.

1
Committee to Protect Journalists. Javier Valdez Cárdenas
2
CNN. Mexican Journalist Javier Valdez Killed in Sinaloa
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Committee to Protect Journalists. Javier Arturo Valdez Cárdenas
4
Latin America Journalism Review. In Mexico, the Special Prosecutor for Journalists Has a Long History but Produces Few Results
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InSight Crime. Mexico Deadliest Place for Media, Advances in Journalist Javier Valdez Murder Case
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Committee to Protect Journalists. Murderer of Mexican Journalist Javier Valdez Sentenced to 32 Years in Prison
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Inter American Press Association. Voices Claiming Justice: Javier Valdez Cárdenas, Emblematic Journalist Murdered in Mexico
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InSight Crime. Damaso Lopez Serrano, Alias Mini Lic
9
Los Angeles Times. U.S. Case Dims Hope in Mexico for Extradition of Alleged Mastermind of Journalist’s Killing
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Washington Post. Javier Valdez, Mexican Journalist Killed
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Voice of America. Widow of Mexican Journalist Demands Justice
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Committee to Protect Journalists. CPJ, Press Freedom Organizations Renew Call for Justice on 9th Anniversary of Journalist Javier Valdez Cárdenas Murder