Naxalite outfit CPI(M-Liberation) on Monday hailed the restoration of democracy in Nepal.
However, the outfit said it was opposed to "interference" by India and the US in the internal affairs of the Himalayan kingdom.
"While we have hailed the victory of the democracy-loving people of Nepal against the monarchy, at the same time we strongly oppose US and Indian interference in Nepal which should be immediately stopped," a spokesman said.
"Let the people in Nepal decide their own fate," he said as about 250 Naxalites, carrying banners and posters, marched in a procession to the kingdom's consulate here to observe Nepal Solidarity Day.
CPI(ML) had earlier called for observing May Day as Solidarity Day.
It also sent a congratulatory message to Nepal's CPN-UML leader Madhav Kumar Nepal, the spokesman added.