New Delhi, Aug 20 (IANS): Hundreds of passengers were left stranded Tuesday when a technical fault occurred in Delhi Metro's Blue Line between Karol Bagh and R.K. Ashram Marg stations, resulting in overcrowding at several stations.

Passengers were standing at platforms all along the busy route that links Dwarka in west Delhi with Noida and Vaishali in Uttar Pradesh, carrying over nine lakh passengers every day.

"Metro services of Line 3 (Dwarka-Noida City Centre) and Line 4 (from Yamuna Bank to Vaishali) are running in three short loops following a technical problem from 12.40 p.m.," said a Delhi Metro official.

Trains are being run on three short loops and single-line service on the various sections of the line.

"The trains are plying from Karol Bagh to Dwarka Sector 21 station and Barakhamba station to Noida City Centre/Vaishali. As the technical snag is between R.K. Ashram Marg and Karol Bagh stations, the trains on this stretch are running on single track between Karol Bagh and Barakhamba stations," the official said.

Five days ago, the corridor between Karol Bagh and R.K. Ashram Marg stations had faced a similar problem in the Over Head Electrification (OHE), which transmits electricity to the trains.

The 49-km Blue Line covers 43 stations in some of the most populous parts of the capital and is the longest in the network.