New Delhi, July 8 (IANS): Delhi Metro commuters faced a harrowing time for the second consecutive day on Wednesday, when a technical snag affected services on one of its lines, causing trains to run slow and halt for inordinately long periods at stations resulting in overcrowding.

Operations on the Blue Line from Dwarka Sector 21 to Noida City Centre/Vaishali were affected after 6.15 p.m. when a strand of the over head electrification (OHE) wire "snapped" at a station.

"A strand of OHE wire snapped at Yamuna Bank station at 6.15 p.m which led to delay of services on the Vaishali - Yamuna Bank section," a Delhi Metro official told IANS.

The official said that during the OHE repair, one train approaching the Yamuna Bank station from Laxmi Nagar got "held up mid-section and passengers opened the emergency doors".

"As a result, there was further delay in carrying out repair work," the official said.

Services on the section from Noida City Centre to Dwarka Sector 21 were, however, running normally.

"Normalcy will be restored on the Vaishali section as soon as the track is cleared and OHE repaired," the official said.

This was the second consecutive day when passengers faced problems on the line as services were affected on Tuesday too, when the trains were "unable to attain their average speed".

Delhi Metro carries approximately 25 lakh people every day on its network with the Blue Line being one of the busiest.