Thieves who stole 60m of signalling cable have caused disruptions to trains between Truro and Penzance.
The theft occurred sometime overnight which led to a signalling failure between Penweathers and Redruth.
A team is on site this morning to install new cables and the trains should be back to normal by about 1pm.
Network Rail said the vandalism should not cause any delays to the Truro to Falmouth train, despite earlier reports of a 20 minute wait for passengers.
British Transport Police have been notified and are investigating the theft.
A spokesman for Network Rail said: "These incidents always cause major disruption to passengers and journeys and for that we apologise. "Cable and metal theft costs us millions of pounds each year and we are cracking down on them."
The theft occurred sometime overnight which led to a signalling failure between Penweathers and Redruth.
A team is on site this morning to install new cables and the trains should be back to normal by about 1pm.
Network Rail said the vandalism should not cause any delays to the Truro to Falmouth train, despite earlier reports of a 20 minute wait for passengers.
British Transport Police have been notified and are investigating the theft.
A spokesman for Network Rail said: "These incidents always cause major disruption to passengers and journeys and for that we apologise. "Cable and metal theft costs us millions of pounds each year and we are cracking down on them."
