Islamic extremists have been defeated and are "on the run" in Sinjar, Kurdish forces said after launching an offensive to retake the Iraqi town.
Backed by coalition forces, including RAF jets and drones, Kurdish forces launched a major attack on the town on Thursday to drive out so-called Islamic State forces.
On Friday, Kurdish troops raised a flag in the town centre and secured several key areas of Sinjar.
"ISIL defeated and on the run," the Kurdistan regional security council said in a tweet, using an acronym for Islamic State.
Peshmerga Major Ghazi Ali, who oversees one of the units involved in offensive, said thousands of Kurdish fighters entered the town from three directions on Friday morning.
They encountered minimal resistance during Friday's push, Ali said. However, he said the situation in the city was still dangerous and warned that it was too soon to declare victory.
Sinjar is an important strategic position as it lies on the road linking Mosul, in Iraq, and Raqqa in nearby Syria.
When IS attacked Sinjar in 2014, the barbaric killing of thousands of Yazidi residents prompted the United States to launch airstrikes against the group.
