Third person arrested in connection with Picayune shootingPICAYUNE, Miss. (WXXV)- We have an update on the shooting investigation in Picayune involving teens, a third person has been arrested. He was located in Lacombe, Louisiana by Slidell Police officers and St. Tammany Parish deputies. The arrest was for an outstanding warrant with the Slidell Police Department for obstruction of justice. Picayune police also had a hold placed on him for aggravated assault.