London-bound train evacuated after 'passenger pulls knife and threatens conductor'

The train had just pulled into Haddenham and Thame station when the passenger was pinned to the ground by four police officers and arrested, a witness said.A 23-year-old man was arrested at the scene on suspicion of ABH and is currently in custody, police said.A witness told the Daily Mail: “Around 50 people had to get off the train and I saw four police officers sprinting across the bridge to get to the man.