The disturbance forced Greater Anglia trains to divert and miss Lingwood and Acle this morning and left the line blocked. British Transport Police have confirmed that two girls were arrested at the scene in the early hours of the morning. The trespassers were understood to be on the tracks near Acle, and the line has been blocked. A spokesman for the force said: "We were called at around 4.28am today (August 5) to reports of trespassers near the railway line between Norwich and Great Yarmouth. "Officers responded alongside Norfolk Police and two girls were arrested on suspicion of trespassing and taken to police custody."