Gunmen surrounded Libya’s foreign ministry yesterday calling for a law banning officials who had worked for deposed dictator Muammar Gaddafi from senior posi-tions in the new govern-ment administration.

At least 20 pick-up trucks loaded with anti-aircraft guns blocked the roads while men armed with AK-47 and sniper rifles directed the traffic away from the building, witnesses said.

Tension between the government and armed militias have been rising in recent weeks since a campaign was launched to dislodge the groups from their strongholds in the capital.

Since Col Gaddafi was toppled by Western-backed rebels in 2011, Libya has been awash with weapons and roving armed bands that are increasingly targeting state institutions.

Yesterday’s protest was to demand a law – which has already been proposed – be passed, banning Gaddafi-era officials from senior government positions. The law could force out several ministers as well as the congress leader, depending on the wording adopted.

“The Ministry of Foreign Affairs will remain closed until the political isolation law is implemented,” the commander of the militia said.

The foreign ministry had been targeted because some officials employed there had worked for Gaddafi, he said.

Libya’s legislature, the General National Congress has previously been prevented from voting on the bill, when protesters barricaded assembly members insidea building for several hours in March demanding they adopt the law.

“The country will remain in crisis so long as these people are present,” assembly member Tawfiq Al-Shehabi said.

On Tuesday, the French embassy in Tripoli was bombed, the first major attack on a foreign target since September’s deadly assault on the US diplomatic mission in Benghazi.

The violent attack showed the Libyan government’s grip on the capital may be slipping.