Oli, 74, and ex-home minister Ramesh Lekhak were arrested in pre-dawn raids on Saturday, a day after Prime Minister Balendra Shah was sworn in following the first elections since the September uprising

Heavy police deployments on Monday barred the protests as they neared the charred old parliament building, set on fire in the September violence in which at least 76 people were killed

The arrests of Oli and Lekhak came after an inquiry commission recommended that the four-time ex-prime minister and other officials be prosecuted for failing to stop security forces from opening fire on demonstrators

Oli, who has health issues, appeared in court via video-link from hospital on Sunday, where an order was given to extend his detention for five days

The two men were arrested over their alleged involvement in the protest crackdown. Neither has been charged, and both deny responsibility for the violence