Arab League Secretary-General Amr Moussa says the US-led invasion of Libya violates a UN Security Council resolution adopted to protect Libyan civilians.
Moussa made the remarks at joint press briefing with UN chief Ban Ki-moon in the Egyptian capital, Cairo, on Monday.
Moussa criticized the US-led airstrikes on Libya and said the UN resolution was meant to only impose a no-fly zone over Libya.
"What is happening in Libya differs from the aim of imposing a no-fly zone, and what we want is the protection of civilians and not the bombardment of more civilians," he said.
“This is unacceptable. The Security Council has an authority and bears responsibility in this matter -- so we gave this matter over to the Security Council as the authority for international peace and security and for this reason we requested a resolution and supported this resolution," Moussa said.
At the press conference in Cairo, the UN chief for his turn defended the UN resolution on Libya, saying it is aimed at protecting civilians from Gaddafi forces. Ban further urged the Libyan officials to comply with the UN Security Council resolution.
Witnesses say dozens of anti-war protesters attacked Ban's car as it left the premises of the Arab League headquarters in Cairo and chanted slogans such as "Down, down with the US and Italy."
Meanwhile, hundreds of people in the US have taken to the streets to protest against the military attack on Libya. The demonstrations were also held to mark the eighth anniversary of the Iraq war.
Protesters held high anti-war placards and protested against the wars in Iraq, Afghanistan and Libya. Demonstrators described the attack on Libya a mistake.
An airstrike by the US-led military forces has destroyed Gaddafi's command and control center.
Meanwhile, media reports say Gaddafi's son Khamis has died of burns apparently caused by a US-led airstrike.
The German Foreign Minister Guido Westerwelle defended Berlin's decision not to take part in the Western invasion of Libya, warning of a protracted conflict in the turmoil-hit country.
"It is not because we have some sort of lingering soft spot for [Libyan ruler Muammar] Gaddafi's system that we decided not to send German troops to Libya, but because we also have to see the risks of a lengthy mission," Westerwelle said on Sunday.