CCTV visuals from the Mewat Toll in Haryana's Nuh district captured prime suspect Dr Umar Un Nabi passing through in the early hours of November 10, hours before the Red Fort-area blast, Delhi Police Joint CP Milind Dumbre confirmed.
Amid tightened security arrangements in the national capital, Delhi Police on Thursday issued a travel advisory urging passengers to reach railway stations, metro stations and the airport well in advance to avoid delays during mandatory checks.