MEXICO CITY (Reuters) -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.

Boxer Julio César Chávez Jr. is in a Mexican prison after being deported from the United States. Chávez was arrested in the U.S. last month and accused of cartel involvement.

The former WBC middleweight champion and recent Jake Paul opponent was immediately arrested and jailed in Sonora on Monday.