NEW : State media say 83 people evacuated three-day after 83 moved Friday . Each side says other was responsible for gunfire directed at U.N.-led aid convoy . Operation began on three-day , part of a months humanitarian pause . More than 2,500 have been trapped by three-day of violence .
NEW : State media say 611 people evacuated Sunday after 83 moved Friday . Each side says other was responsible for gunfire directed at U.N.-led aid convoy . Operation began on Friday , part of a three-day humanitarian pause . More than 2,500 have been trapped by months of violence .