British Transport Police have arrested a Castleford man on suspicion of a cable theft which brought trains to a standstill.
The 34-year-old man was arrested at his home in the centre of the town.
He was quizzed on suspicion of stealing copper cable from the rail line in Castleford on Wednesday, December 1.
The man, who was arrested in the early hours of Saturday, was later released on bail pending further enquiries.
Police say 31 passenger and freight trains were delayed for two hours after around 20ft of cable was stolen from the line.
Metro chairman Coun Chris Greaves said: "As well as putting passengers in danger, cable theft causes widespread delays to trains, which in turn means massive inconvenience for people trying to go to work, school and college, attending appointments and just go about their daily lives.
"And it has a real cost to those people in lost earnings, lost time and even potentially lost jobs. I fully commend the partnership working between Network Rail and Crimestoppers to tackle cable theft."
Anyone with information about cable thefts is asked to call Crimestoppers on 0800 555 111 or British Transport Police on 0800 40 50 40.
Information resulting in the arrest and conviction of cable thiefs could lead to rewards of up to 1,000.