The incident took place at around 8 PM when there was a "flashing" (spark) in the pantograph (section that connects a train to over head wire) of the train headed towards Jahangirpuri.
"The ripple effect could be felt as the train was taken to the nearest depot at Khyber Pass depot on restricted speed. It reached the depot at 9 PM following which services were resumed," a metro official said.
When contacted, fire officials said that 6-7 fire tenders went to the Chawri Bazar station at around 8.05 PM, however, they returned without having to intervene.
"Although our vehicles were rushed following reports of snag, they came back as there was no fire," an official said.
Today's snag on the Yellow Line, that connects Jahangirpuri to Gurgaon, comes within a month of snapping of an overhead wire at Yamuna Bank station, that grounded services on the entire Blue Line in peak hour.