A murder investigation has been launched after a teenager was stabbed to death during a "shocking" daylight attack in east London.
Police were called to an altercation in Alexia Square, near Crossharbour DLR station in Poplar, shortly after 6pm on Friday.
Officers found a 19-year-old man with stab wounds.
Emergency services carried out first aid, but he was pronounced dead at the scene. His family has been informed.
A second man, also believed to be in his late teens, was rushed to hospital by London Ambulance Service.
He remains in hospital with serious injuries, police said.
A crime scene is in place and no arrests have been made.
Detective Superintendent Gareth Williams from British Transport Police said: “This was a shocking act of violence in broad daylight, which has seen a man tragically lose his life and another in hospital with serious injuries.
“While we are at the early stages of our investigation, we believe a group of young men were involved in an altercation at the station, before two of the men received stab wounds.
“We are doing all we can to find those responsible, and I would urge any witnesses, or anyone who was in the area at the time and saw anything suspicious to contact us as soon as possible.
“This level of violence is highly unusual on the rail network, but we will be increasing our uniformed patrols in the Crossharbour area in the coming days, to help reassure the travelling public. "
Anyone with information should text BTP on 61016 or call on 0800 40 50 40 quoting reference 424 of 10/07/20. Alternatively, you can call Crimestoppers anonymously on 0800 555 111.