An attempted theft of signal cables damaged the signalling system, affecting services on the Delhi Metro Airport Express Line between Dhaula Kuan and Shivaji Stadium, stated a DMRC release on Sunday morning.

Although the cables were cut during the attempted theft, the thieves could not take the cut pieces, which were found near metro pillar number 9 during inspection. The cable theft has disrupted the signalling system, and trains were restricted to a speed of 25 kmph in the affected section between Dhaula Kuan and Shivaji Stadium stations on the up line towards New Delhi,” the DMRC said in a statement.

The DMRC said that, to minimise passenger inconvenience, restoration work had been carried out over night after the end of revenue service.