Iraqi Prime Minister Haider al-Abadi on Tuesday visited Ramadi, a day after federal forces announced the liberation of the city from the "Islamic State" (ISIS) terrorist group, clinching a landmark victory.

Abadi arrived by helicopter in the battle-scarred city, which lies around 100 kilometers west of Baghdad and is the capital of the province of Anbar, an AFP correspondent reported.

The premier vowed Monday, after counter-terrorism forces raised the flag above the key government complex in Ramadi, to rid the whole country of ISIS by the end of 2016.