American B-2 bombers have been deployed over Libya, according to international media reports.
Three of the bat-shaped radar evading bombers are reported to have dropped up to 40 bombs on Libyan airfields.
Similar operations were performed in the past against airfields in Iraq.
The US and Britain have so far said that they fired 112 Tomahawk missiles at Libya from surface warships and submarines in the Mediterranean.
The UK said missiles were also fired from Tornado GR-4 bombers which flew from the UK, their longest bombing mission since the Falklands War.
French aircraft yesterday attacked and destroyed a number of Libyan tanks near Benghazi.
Libya has said 48 people were killed in the attacks.