A teenager has been arrested over the fatal stabbings of two 16-year-old boys a mile apart in south-east London, police said.Kearne Solanke was found with stab wounds in Thamesmead, and Charlie Bartolo was discovered in Abbey Wood, on Saturday afternoon.The Metropolitan police said late on Sunday evening that a 16-year-old boy had been arrested on suspicion of their murders, with the two incidents being treated by police as linked.DCI Kate Blackburn, from the Met’s specialist crime command, said: “This is a positive development in what is a complex and fast-moving investigation. Charlie and Kearne’s families have been informed.“Our investigation is ongoing and we continue to appeal for the public’s help as we build a picture of what happened on Saturday night. If you have information, no matter how insignificant you think it may be, please come forward.”Police were called out at about 5.10pm on Saturday to reports that people had been injured at both locations. Both teenagers were pronounced dead and murder investigations launched.Earlier, DS Richard McDonagh, speaking at the scene of one of the incidents, told reporters: “Homicide colleagues are investigating and are treating the two murders as linked. I can assure everybody affected by these murders that skilled detectives will work tirelessly to discover what happened and provide answers to the young victims and families.“Officers are especially keen to hear from anyone who might have seen a dark-coloured SUV or 4X4 type with distinctive silver roof bars in the areas around Sewell Road or Titmuss Avenue in the days prior to the murders.“We have already heard from a number of witnesses and I’m grateful to them.”Anyone with information should call police on 101, giving the reference 4943/26NOV, or Crimestoppers, anonymously, by calling 0800 555 111.