Rebel forces in Libya marched on Tripoli during the weekend and captured two of Gadhafi's sons. Through audio broadcasts, Gadhafi called the rebels "rats" and angrily urged the city's residents to fight against them, but there were few signs of local resistance. When rebels entered the city, there were celebrations in the street followed by four hours of calm. After that, tanks emerged from Gadhafi's compound and began firing in all directions. Rebel leaders were confident of victory, yet said that victory will not be complete until they have captured Gadhafi. This surprising breakthrough, after six months of civil war, resulted from a closely coordinated plan created by rebels, NATO forces and anti-Gadhafi residents inside Tripoli.