Libya's former foreign minister Moussa Koussa, who is in Britain after defecting from Moammar Gaddafi's regime, said on Monday the restive nation could become a "new Somalia" if civil war broke out.
"I ask everyone, all the parties to avoid taking Libya into a civil war," the former minister said in a statement issued to the BBC.
"This would lead to so much blood and Libya will be a new Somalia," he said. "We refuse to divide Libya.
"The unity of Libya is essential to any resolution and settlement for Libya," he added.
Mr Koussa arrived in Britain unexpectedly on March 30 and immediately quit his post as foreign minister.
Libyan rebels on Monday rejected an African Union initiative for a truce accepted by Gaddafi, and said the only solution was the strongman's ouster, an idea his son called "ridiculous."