It is to eliminate the Tamil Tiger fighters. But they're not going into the no-fire zone. They've been battling them in the remaining sliver that the Tigers are holding. Also, they've been trying to dig up all the hidden weapons, because if some of these Tamil Tigers manage to get into the jungle, this would prevent them from again causing trouble in the country.
They have been consolidating the area that they regained and they have been making a search. Just yesterday, they found something like 1,400 guns and a large stock of explosives. They're trying to remove these weapons of war to prevent a similar situation from arising.
Of course, I have heard that they have agreed to a humanitarian pause. Even if you have a ceasefire, the Tigers are not going to release the civilians; it's not possible to bring them to safety. They have not been attacking the Tigers, although the Tigers continue to attack the forces from within the safe zone, as they have their heavy guns and their bunkers right in the midst of the safe zone.