Allied jets reduced an administrative building inside Colonel Gaddafi's Tripoli compound to rubble last night in a massive display of firepower.

Allied jets reduced an administrative building inside Colonel Gaddafi's Tripoli compound to rubble last night in a massive display of firepower.

The three-storey block is close to the dictatro's iconic tent and around 300 of the his supporters were believed to be in the area at the time although it was unclear if anyone was hurt.

Libya claims 64 civilians have so far been killed in bombing raids, which have prompted Russia and Arab leaders to express their reservations.

However, Britain is staying on the front foot, with Defence Secretary Liam Fox saying yesterday he would sanction a ‘bunker buster’ attack on the Libyan Gaddafi’s lair as long as casualties could be avoided.

Dr Fox vowed to destroy the Libyan dictator’s entire military infrastructure as senior officials privately admitted they want to engineer regime change.