Legendary boxer Julio César Chávez Jr. will stand trial over alleged cartel ties and arms trafficking, his lawyer has said.

A Mexican court has granted a three-month extension for further investigation into the case, according to Chávez's lawyer, Rubén Fernando Benítez Alvarez.

He said the claims against his client were "speculation" and "urban legends" after a court hearing on Saturday in the northern Mexican city of Hermosillo.

If convicted, Chávez - who took part in the hearing virtually from a detention facility - could face a prison sentence of four to eight years, Mr Alvarez said.

Chávez, 39, who has been living in the United States for several years, was arrested in early July by federal agents outside his Los Angeles home for overstaying his visa and providing inaccurate detail

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