China expressed concern on Monday for the fatalities and injuries of Libyan civilians amid reports that Libyan leader Muammar Gaddafi's youngest son and three grandchildren were killed by NATO airstrikes.

"The Chinese side has noticed reports that Gaddafi's son, Saif al-Arab, and others were killed in the raids," said Chinese Foreign Ministry spokesperson Jiang Yu when responding to a question from the press.

"We are concerned about the deaths and injuries of civilians caused by the escalating conflict in Libya," Jiang said.

China disapproves of any act beyond the authorization of the UN Security Council and hopes that all relevant parties will immediately cease fire and resolve the crisis politically through dialogue and other peaceful means, she added.