An arrest warrant has been issued for the mother of hip-hop mogul Damon Dash
's 16-year-old son - after the woman failed to return the teen to his father following a custody ruling last week.New York judge Susan Knipps ruled that Linda Williams must hand over the couple's son Damon Jr. to the star last Wednesday as part of their ongoing custody battle.Dash - who has sole custody of the teenager - took Williams to court when she allegedly enrolled the boy at a school in Long Island, New York, while he was visiting her home at the start of the month. Dash had reportedly planned for their son to attend school in the city's Upper West Side. Williams, who was not present for last week's decision, was due to make a court appearance on Monday, but after she failed to show for that hearing, Knipps issued a bench warrant for her arrest.The whereabouts of Damon Jr. are currently unknown. A spokesperson for Dash had not issued a comment on the warrant.