A 19-year-old Hilton Head Island man is being sought on two counts of criminal sexual conduct with a 13-year-old girl, according to the Beaufort County Sheriff's Office. Austin Anthony Mandikas, whose last known address is Hilton Head Beach Club at Tanglewood Drive, is accused of sexually assaulting the girl at two locations in February and March, the Sheriff's Office said. Mandikas is known to have ties to Georgia and may be traveling in a white Ford Explorer. He is a white male, about 5-foot-7, 130 pounds, with black hair and brown eyes. Anyone with information regarding his whereabouts is asked to contact Cpl. J. Garcia at 843-255-3412 or dispatch at 843-524-2777.