TRIPOLI, Libya, April 10 (UPI) -- The battle for Ajdabiya see-sawed Sunday with NATO-supported Libyan rebels knocking back Moammar Gadhafi's forces that had entered the city, witnesses said.
Meanwhile, South African President Jacob Zuma, who led an African Union delegation to Tripoli Sunday, said after meeting with Gadhafi that he had agreed to a "road map" for peace. The delegation was to head to Benghazi to meet with rebel leaders and press for a cease-fire.
CNN reported Libyan rebels had retaken Ajdabiya after pro-government forces had wrested the city from them earlier.
Opposition spokesman Shamsiddin Abdulmolah told CNN two attack helicopters piloted by rebels attacked government forces in Ajdabiya.
"There were some 50 regime pickup trucks with machine guns and rocket launchers that attempted to enter Ajdabiya," Abdulmolah said. "The helicopters destroyed several of the trucks, and the rest took off."
Rebel Saleh Mufta had told Britain's The Guardian newspaper earlier Gadhafi's forces had entered the city.
"Gadhafi has copied our techniques," Mufta said. "He is not using so many tanks now after the airstrikes. His men are in pickups. They move very fast. We don't know where they are. They just pop up."
Fighting also continued at Misurata, with both sides experiencing casualties, the U.S. news network said. NATO warplanes pounded the Gadhafi ground forces through the weekend.
NATO said airstrikes near Ajdabiya and Misurata Sunday destroyed 25 Gadhafi regime tanks.
As an example of "NATO impartiality," the alliance said, a MiG-23 fighter flown by rebels was intercepted and forced to land outside Benghazi Saturday.
NATO says Gadhafi's forces have used civilians as human shields, CNN reported.
"We have observed horrific examples of regime forces deliberately placing their weapons systems close to civilians, their homes and even their places of worship," Lt. Gen. Charlie Bouchard, commander of NATO's Operation Unified Protector, said. "Troops have also been observed hiding behind women and children. This type of behavior violates the principles of international law and will not be tolerated."
As government troops surprised rebels by advancing from the desert, Deputy Foreign Minister Khaled Kaim said two rebel-operated helicopters in the east were shot down in accordance with the United Nations no-fly zone meant to ground government aircraft, the BBC said.
The rebel capital of Benghazi, 90 miles up the road from Ajdabiya, appeared nearly undefended, The Guardian reported.
Zuma has accused NATO of violating the "letter and spirit" of the U.N. resolution with the extensive airstrikes and has said Gadhafi should be allowed to quit "with dignity."
CNN said United Nations Secretary-General Ban Ki-moon will travel to Cairo Thursday for meetings on Libya at the Arab League headquarters. Catherine Ashton, the representative for foreign affairs and security for the European Union, was to participate, CNN said.
Using his military title of colonel, Gadhafi has been the autocratic leader of the North African country for 43 years. He has taken a defiant stance against the pro-democracy rebellion that has been sweeping various Muslim countries since the beginning of the year.