PHILADELPHIA (AP) — Authorities say three teenagers are in stable condition after a triple shooting in Pennsylvania in which another teen is being sought. Police said the 14-year-old boy and two 14-year-old girls were shot shortly after 9:30 p.m. Saturday during a festival at popular Penn’s Landing, a stretch of waterfront parks and eateries along the Delaware River in Philadelphia. The boy, who was shot in the right ribs, and the two girls, both shot in the foot, were all reported in stable condition Sunday at Thomas Jefferson University Hospital. Police said that the shooter was a 14-to-15-year-old male and that the gunfire followed an argument.