Teenagers involved in separate traffic accidents over the weekend were yesterday said to be in a stable condition in hospital.A 13-year-old boy involved in a three-vehicle collision was being treated for his injuries on the Children’s Ward at King Edward VII Memorial Hospital, according to police.Witnesses to the Sunday accident near Lukes Pond Road, Southampton, are asked to contact PC Gregory Battersbee on 295-0011 with information.An 18-year-old was being treated on a general ward after his motorcycle and a truck collided in Devonshire near Christ Church Lane on Friday afternoon.Witnesses to that accident are asked to contact PC Teledo Breary on 295-0011.Meanwhile, police arrested 12 people with outstanding warrants and one person suspected of driving while impaired. Officers also checked liquor licenses at various locations around the Island.