Sean Penn's 16-year-old son, was arrested sometime last week, according to two sources near the investigation who spoke exclusively with RadarOnline.com.
The younger Penn was taken into custody by the L.A. County Sheriff's department. Because he is a minor, authorities will not release details as to why he was arrested or if any charges have been filed.
A senior L.A. County Sheriff's source did tell RadarOnline.com the teenager was busted at the school he attends in the posh Malibu area.
His arrest comes at a difficult time for the family. Just this past August, Robin Wright Penn filed for divorce, declaring this time (unlike previous times when she withdrew divorce papers) that she has no plans to reconcile.