Los Angeles, California - Mexican boxer Julio Cesar Chavez Jr. has been arrested by US immigration officers and faces deportation from the US, the Department of Homeland Security said Thursday.

Chavez, a former world champion and the son of legendary Mexican fighter Julio Cesar Chavez, was detained by Immigration and Customs Enforcement (ICE) officers in Los Angeles on Wednesday after authorities determined that he was in the country without documentation, Homeland Security said in a statement.

Homeland Security, which oversees ICE, said the 39-year-old fighter has "an active arrest warrant in Mexico for his involvement in organized crime and trafficking firearms, ammunition and explosives."

The Mexican public prosecutor's office said in a statement later Thursday that Mexico had issued an arrest warrant for Chavez in 2023 "for organized crime and arms trafficking."

Kamala Harris New poll sheds light on how Californians feel about Kamala Harris becoming governor

Robert F. Kennedy Jr. Robert F. Kennedy Jr. accuses Anthony Fauci of "creating coronavirus"

US authorities informed Mexico that they have begun the procedure to send him home, it added.

Homeland Security said Chavez is believed to have ties to the Sinaloa cartel, one of six Mexican drug trafficking groups designated as terrorist organizations by the US.

Chavez's arrest comes days after his lopsided loss to YouTuber-turned-boxer Jake Paul in a cruiserweight bout before a sell-out crowd at the Honda Center in Anaheim, California.

Michael A. Goldstein, a lawyer for Chavez, told the Los Angeles Times that Chavez "was detained outside of his residence by 25 or more ICE and other law enforcement agents."

"They blocked off his street and took him into custody, leaving his family without any knowledge of his whereabouts," Goldstein said.

Politicians Sen. Kirsten Gillibrand apologizes to Zohran Mamdani over shocking "jihad" claim

US politics Pentagon makes new claim about damage done by US strikes on Iranian nuclear sites

"The current allegations are outrageous and appear to be designed as a headline to terrorize the community."

Homeland Security said Chavez had entered the US with proper documentation in 2023 on a tourist visa that was valid until February 2024.

In April last year, he applied for permanent residency based on his marriage to a US citizen "who is connected to the Sinaloa cartel through a prior relationship with the now-deceased son of the infamous cartel leader Joaquin 'El Chapo' Guzman," the department said.

Homeland Security said that in addition to the active warrant in Mexico, Chavez had criminal convictions in the US, including on weapons charges in 2024 in Los Angeles.

According to the statement, US Citizenship and Immigration Services told ICE that Chavez posed "an egregious public safety threat."

Donald Trump campaigned for president promising to expel millions of people without documentation from the US, and he has followed through with widely condemned raids targeting families and communities across the country.

Authorities accused the administration of Trump's predecessor Joe Biden of not making Chavez an "immigration enforcement priority."

Chavez was allowed to re-enter the US on January 4, 2025, at the San Ysidro port of entry, Homeland Security said – while Biden was still in the White House.

In a statement posted on the X account of Julio Cesar Chavez Sr., the Chavez family expressed support for Chavez Jr.

"Our family is deeply dismayed by the situation," the statement said. "In these difficult times, we reiterate our full and unconditional support for Julio."

"We fully trust in his innocence and his humanity, as well as in the justice institutions in both Mexico and the United States, in which we place our hope that this situation will be clarified according to the law and truth."

Chavez Jr. won the WBC middleweight world title in 2011 and successfully defended it three times. He owns a record of 54-7 with one draw, but his career has also included multiple suspensions and fines for failed drug tests.

Two weeks before his bout with Paul, Chavez held a public workout in California where he told the Los Angeles Times that one of his trainers had skipped the session because of fears raised by immigration arrests.

"I don't understand the situation – why so much violence?" he told the newspaper. "There are a lot of good people, and you're giving the community an example of violence."

"After everything that's happened, I wouldn't want to be deported," he said.