US President Barack Obama (2nd L) and Indian Prime Minister Manmohan Singh (C) shake their hands as first lady Michelle Obama looks on at New Delhi's airport on Nov 7, 2010. US President Barack Obama called on India on Sunday to bolster peace efforts with Pakistan that have floundered since the 2008 Mumbai attacks, relations seen as crucial to his troubled efforts to win the war in Afghanistan. [Photo/Agencies]

NEW DELHI - India's Naxal rebels struck again Monday by blowing up a railway track in the eastern state of Bihar, which led to the derailment 10 wagons of a freight train, a senior police official said.

But no casualty was reported in the incident.

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"Some 50 armed Naxalites triggered a dynamite blast blowing up the railway track near Kurhani station in Hajipur- Muzaffarpur section of the state's Muzaffarpur district at 03:00 am," Bihar police chief Neelmani told the media.

"At least 10 wagons of the goods train which passed over that track after the blast got derailed," he added.

The Naxals have called for a nationwide shutdown on Monday to protest US President Barack Obama's visit here.