New Delhi, Oct. 13 -- The Opposition on Monday led thousands of people who flooded central Delhi for three hours in protest against chief election commissioner (CEC) Gyanesh Kumar, marking one of the largest political mobilisations in recent years that followed two days of police crackdown on agitators.

Congress leader Rahul Gandhi led the march from the Constitution Club to Bhagwan Das Road and later walked into the Supreme Court to file a petition demanding an independent, time-bound investigation into decisions allegedly taken unilaterally by Kumar and to suspend the ongoing special intensive revision (SIR) pending this inquiry.

The petition - which named the Election Commission of India, Kumar and two other election commissioners as...