Terrance Jennings / Retna Ltd. 1 / 5
Terrance Jennings / Retna Ltd. 1 / 5

By Dana Flax

According to Radar Online, Sean Penn and Robin Wright Penn's 16-year-old son, Hopper Jack, was reportedly arrested at his Malibu school last week.

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Two sources close to the investigation report that the L.A. County Sheriff's department took Hopper into custody. Authorities will not release details as to the cause for arrest, or if charges were filed, as he is a minor.

This news comes in a difficult year for the Penns; Robin Wright Penn filed for divorce from Sean Penn this past August.

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"I hit that crossroad a while ago," Wright Penn told More magazine of her decision to file divorce papers. "I know what I don't want."

The couple also have an 18-year-old daughter, Dylan Frances.

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