In a major lapse, the doors on one side of a Delhi Metro train remained open while it was travelling between the Arjan Garh and Ghitorni stations, an official said.
The incident took place on the yellow line that operates from Jahangirpuri to Huda City Centre stations.
"The doors remained open between the Arjan Garh and Ghitorni stations. The incident occurred sometime between 9.30 am and 9.45 am," an official told IANS.
Delhi Metro ferries about 23 lakh passengers every day.