Sean Penn and Robin Wright's Son Arrested on Drug Possession Charges

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Hopper Penn

Hopper Penn and his girlfriend were arrested Wednesday in Nebraska.

The son of Sean Penn and Robin Wright has been arrested on drug possession charges in Nebraska.

A Nebraska State Patrol spokesman says the actors' 24-year-old son, Hopper Penn, and his girlfriend, 26-year-old Uma Von Wittkamp, were arrested Wednesday afternoon after a trooper stopped their vehicle on Interstate 80.

Authorities say the trooper detected drug activity inside the vehicle and found 14 grams of marijuana, four amphetamine pills and three grams of mushrooms.

Von Wittkamp was charged with two counts of possession of a controlled substance. Penn was charged with possession of a controlled substance and possession of marijuana. Possession of a controlled substance is a felony.

They were both taken to the Hamilton County Jail.