A son of notorious drugs kingpin "El Chapo" has pleaded guilty to drug charges in the US.

Joaquin Guzman Lopez, 39, known in Mexico as "Chapitos" or "little Chapos", admitted two counts of drug trafficking and continuing criminal enterprise.

As part of a plea deal to avoid a life sentence, he said he had overseen the production and trafficking of large amounts of fentanyl, cocaine, heroin, methamphetamine and cannabis.

Most of it is said to have been smuggled through underground tunnels.

He was arrested last year when he landed in the US on a private plane with another cartel leader, Ismael "El Mayo" Zambada.

Zambada's lawyer previously said his client was "forcibly kidnapped" by Guzman Lopez and forced on the US-bound flight.

Their capture caused a spike in violence in northern

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