Mosul battle: Iraqi forces cut IS escape route to Tal Afar

Popular Mobilisation militiamen have cut the road to prevent IS sending reinforcements to Mosul

Iraqi forces are reported to have taken control of the last major road out of western Mosul, preventing Islamic State militants from fleeing the city.

A source in the paramilitary Popular Mobilisation force told the BBC that the highway was cut near the village of Badush, about 10km (six miles) away. The route leads to Tal Afar, another IS stronghold that is 40km further west.

The police Rapid Reaction Force recently recaptured the Jawsaq district of western Mosul

Government forces already control the east of Mosul and they began an assault aimed at capturing the west last month.

They have since driven militants from the international airport, a military base, a power station and a number of residential areas, according to the military.

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The source in the Popular Mobilisation, which is dominated by Iranian-backed Shia militias, said its fighters and soldiers from the Iraqi army's 9th Armoured Division had taken control of the highway to Tal Afar near Badush on Tuesday night.

A general in the 9th Armoured Division separately told Reuters news agency that other units were within 1km of the north-western entrance to Mosul. "We effectively control the road, it is in our sight," he said.

Residents had confirmed they could no longer use the highway, Reuters reported.  In November, Popular Mobilisation fighters advancing from the south cut the road west of Tal Afar, effectively encircling IS-held territory around Mosul.

They then started working to block the route between Tal Afar and Mosul to prevent IS from using it to send reinforcements and supplies to the city.

Inside western Mosul on Wednesday, officers from the federal police Rapid Response Force were said to be approaching the city's government buildings.

The force's commander, Maj-Gen Thamir al-Husseini, told the Associated Press that they were about 800m (2,600ft) from the complex. Although they are located near the old city, recapturing the buildings would be a largely symbolic victory.

On Monday, the Rapid Response Force reached the western end of a bridge over the River Tigris, giving the government control of a crossing for the first time since the Mosul offensive began in October.