Libya said on Sunday Muammar Gaddafi's youngest son and three grandchildren were killed in a Nato air strike.
Government spokesman Mussa Ibrahim said Gaddafi was unharmed and in good health despite what he called “a direct operation to assassinate the leader of this country”.
The deaths have not been independently confirmed but could trigger a backlash against the West. Britain and Italy’s embassies in Tripoli were attacked. Nato denied targeting Gaddafi, or his family.
Libyan officials took journalists to a Tripoli house that had been hit by at least three missiles. Ibrahim said Gaddafi's youngest son, Saif al-Arab, was killed in the attack. Saif al-Arab, 29, is one of Gaddafi's less prominent sons, with a limited role in the power structure. Ibrahim described him as a student who had studied in Germany.
The grandchildren killed were pre-teens, Ibrahim said.
In New Delhi, the CPM demanded immediate end to Nato strikes and said India push for an emergency meeting of the UN Security Council.