The Line 3 or Blue Line connects Dwarka Sector 21 with Noida City Centre, and is on of the busiest corridors of the network.
"There was a slight delay around 7:30 am due to troubleshooting in a train at Kaushambi Metro Station, heading towards Dwarka. Its emergency brakes were not getting released, so the train was withdrawn from service after 15 minutes of troubleshooting," a senior DMRC official said.
"This may have resulted into bunching on Line-3 for a while," he said, adding, services were later resumed.
The DMRC is all set to open its Majlis Park-Durgabai Deshmukh South Campus segment of its new Pink Line tomorrow.