Iraqis take back Shirqat from IS: report

Shirqat, near the IS stronghold of Mosul has reportedly been taken back by Iraqi troops.

Shirqat, near the IS stronghold of Mosul has reportedly been taken back by Iraqi troops. (AAP)

The Iraqi military says its forces have pushed deeper into a key Islamic State-held town north of Baghdad days after launching an operation to retake it.

The Joint Military Operation Command said the Iraqi flag was hoisted on Thursday over the mayor's office and the main hospital complex in the town of Shirqat.

Backed by paramilitary troops, mostly Shiite militiamen, and aerial support from the US-led international coalition, government forces launched the Shirqat operation on Tuesday.

The town lies near the city of Mosul, which is the IS group's last major urban stronghold in Iraq.

Shirqat, about 250 kilometres north-west of Baghdad, was among the first areas to fall into IS hands during the militants' June 2014 blitz.