Chief Superintendent Andy Brittain, in charge of local policing, said: “Our immediate thoughts are with this young girl’s family who are facing the most tragic of news. Our officers are with the girl’s family to support them.
“I am in contact with the local community, who are clearly as concerned as we are about this tragic incident. I shall continue to update them throughout the day.
“My officers were immediately on scene to provide first aid and support paramedics.
“Acting on information provided to them, officers also worked closely with colleagues from across the Met and the British Transport Police to track a teenager in connection with the stabbing. I can confirm that an arrest was made at about 09:45hrs in the Croydon area. At this early stage we believe that he may have known her.
“A crime scene will be in place for some time, and I am grateful for the cooperation of residents.”
Police were called at about 08:30hrs on Wednesday, 27 September to reports of a 15-year-old girl stabbed on Wellesley Road in Croydon.
Officers, the London Ambulance Service and London’s Air Ambulance attended. Despite their efforts, sadly she died at the scene at 09:21hrs.
A crime scene is in place.