A 17-year-old boy has been stabbed to death in a "targeted attack", police said. Thames Valley Police are hunting for up to four suspects - who had their faces covered - following the attack in High Wycombe, Buckinghamshire, on Sunday evening.
Another 17-year-old boy was also hurt but his injuries are not thought to be life-threatening and he has been taken to hospital.
Officers were called to reports of the stabbing in the Easton Street area of High Wycombe at about 7.30pm on Sunday. No arrests have been made.
Senior investigating officer Detective Superintendent Kevin Brown said the investigation into the "tragic incident" was in "the very early stages" and "details as to what has happened are currently very limited".