A teenager remains in a critical condition four days after collapsing in a shop following a stabbing in Croydon town centre.Police are still investigating the incident which happened on Monday afternoon, at about 3.30pm and say that no arrests have been made.Officers and paramedics rushed to Charrington Road 15 minutes later where an 18-year-old man was found to have collapsed after suffering a single stab wound to his chest.The victim was taken by the London Air Ambulance to a hospital in south...
