Detectives have launched a murder inquiry after a man in his 20s was shot dead outside a north London Tube station. The victim was found after collapsing at a bus stop opposite Turnpike Lane station around 1.10am. He died at the scene. Local residents told how they heard a “bang” followed by screaming and shouting. An eyewitness said: “I heard at least three shots, ‘pop, pop, pop’. Then the guy staggered holding his side and collapsed. His...