A couple of hours later, @OfficialDMRC tweeted, "Delay in service from Janakpuri West to Dwarka Sector 21."
Within half an hour, a final update was issued on Twitter, "Normal service has resumed. Please allow some extra time for the bunching of trains to clear."
Earlier on Tuesday, in a suspected suicide bid, a man in his early 20s died after an approaching train smashed his head while he lay on the platform at New Ashok Nagar metro station, police told PTI.
The man, identified as Amit Soni, a resident of Gwalior in Madhya Pradesh, laid down on the platform, with his head and shoulders sticking out towards the track, when he saw the train approaching, they said.