ALL train lines between Southampton Central and Bournemouth have been blocked after a trespasser entered the tracks.

South Western Railway has advised its customers that some trains may be changed as a result of the incident and that disruption is expected until 10am. 

A statement on its website said: "We are aware of a trespass incident between Bournemouth and Southampton Central.

"In order to ensure the safety of the trespasser, and of all trains, passengers and crews, all trains in this area have to stop until a safe operating environment is re-established. 

"We may need to make short-notice changes to trains in order to manage disruption.

"We may need to change where your train stops or cancel it at short notice."

More to follow.