Metro services were suspended on Saturday night after a shopping trolley was thrown towards the line and got caught between two carriages and in the overhead wires.
Services were stopped at around 10.30pm between Four Lane Ends and Tynemouth and remained suspended for the rest of the night. Nexus confirmed that the disruption caused by the shopping trolley on the overhead was an act of criminal damage.
A spokesperson for the Tyne and Wear Metro said: "This is the cause of the service suspension between Four Lane Ends and Benton this evening. Trains will remain suspended in this area for the rest of the night."