Mexican boxer Julio Cesar Chavez Jr has entered a prison in the northern Mexico state of Sonora after his arrest in the United States in July, Mexico's national arrest registry showed on Tuesday.

Julio Cesar Chavez Jr. was arrested by ICE for outstanding warrants for allegations of organized crime and ties to the Sinaloa Cartel.

“It’s complicated; there’s a lot of talk, but we’re calm because we know my son’s innocence,” Chávez Sr. told Colombian newspaper El Heraldo.