The French branch of a party led by maverick U.S. politician Lyndon H. LaRouche Jr. today accused Libyan-backed terrorists of attacking its offices with fire bombs.

The French headquarters of the party, known here as the European Workers' Party, was damaged by two firebombs left outside its entrance on the third floor of a Paris apartment block.

The explosion buckled the armor-plated door in addition to blowing a hole in the ceiling on the landing late last night, but no one was injured.

The party's leader, Jacques Cheminade, linked the attack to a recent meeting of Third World resistance and guerrilla groups in Libya and last month's U.S.-Libyan clash over freedom of navigation in the Gulf of Sidra.

But he said that no group had asserted responsibility for the attack and that there was no hard evidence linking it to Tripoli.

An offshoot of the U.S. Labor Party, founded by LaRouche, the European Workers' Party has operated on the political fringe here for the last five years and never has made much of an impact in elections.

According to its own figures, it collected a total of 50,000 votes in last month's parliamentary elections in France, a figure representing less than 0.2 per cent of the electorate.

Cheminade, who ran against former president Valery Giscard d'Estaing in a parliamentary by-election last year, said that the party had repeatedly accused Libyan leader Muammar Qaddafi of financing terrorism.

The French branch of the European Workers' Party claims 800 paid-up members, of whom 30 or 40 are "extremely active."

Its weekly newspaper, New Solidarity, claims a total circulation of 10,000.

The European Workers' Party was in the news here recently following the arrest of a former sympathizer on suspicion of assassinating Swedish prime minister Olof Palme on Feb 28. The party, however, has denied that it had anything to do with Palme's assassination and the suspect was later released.

The party has its European headquarters in Wiesbaden, West Germany.