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Mosul offensive: Iraqi army resumes advance on IS bastion Mosul offensive: Iraqi army battles for outskirts of IS city
(about 7 hours later)
Iraqi government forces have resumed their push towards western Mosul, the last major stronghold of so-called Islamic State (IS) in Iraq. Iraqi government forces have moved closer to the southern outskirts of western Mosul, on the second day of a fresh offensive against so-called Islamic State.
Artillery fire could be heard in the distance, reports the BBC's Quentin Sommerville, who is embedded with government troops. The outlying village of Abu Saif, which overlooks Mosul, has been hit by air strikes and helicopter gunships as the military advanced.
Launching the operation on Sunday, the army seized several villages. Iraqi forces have now entered Abu Saif.
The eastern part of the city was liberated from IS last month after heavy fighting. The eastern part of Mosul was liberated from IS fighters last month after heavy fighting.
Abu Saif, which overlooks Mosul's airport, is seen as a key IS stronghold on the southern approach to western Mosul.
The BBC's Quentin Sommerville, who is embedded with government troops, said the bodies of some IS fighters lay by the roadside, apparently hit by mortar fire or other artillery.
Progress has been slowed down by improvised bombs planted by IS along the route of the offensive, he said. But the army seized several villages on Sunday, when it launched its fresh offensive.
No civilians had been spotted as the army advanced, our correspondent added.
Other government forces have been moving towards the Ghazlani military base, which they plan to use as a staging post for the attack on western Mosul itself.
On Monday, US Defence Secretary James Mattis arrived in Baghdad on an unannounced visit.On Monday, US Defence Secretary James Mattis arrived in Baghdad on an unannounced visit.
He told reporters the US military was "not in Iraq to seize anybody's oil", seemingly to allay concerns after Donald Trump last month said the US "should have kept the oil" when it pulled troops out of Iraq in 2011. He told reporters the US military was "not in Iraq to seize anybody's oil", seemingly to allay concerns after Donald Trump said last month that the US "should have kept the oil" when it pulled troops out of Iraq in 2011.
Thousands of Iraqi troops, backed by artillery and air power, are involved in the assault to retake Mosul.Thousands of Iraqi troops, backed by artillery and air power, are involved in the assault to retake Mosul.
Their progress has been slowed down by huge improvised explosive devices planted by IS along the route of the offensive, our correspondent says.
Bomb disposal teams are being used to clear them.
In their assault, Iraqi soldiers have been using heavy weapons, including rocket missile launchers, our correspondent adds.
On the ground with Iraqi forcesOn the ground with Iraqi forces
The BBC's Quentin Sommerville is embedded with Iraqi forces as they advance on Mosul. He is tweeting updates as his convoy attempts to move forward: The embedded Quentin Sommerville is tweeting updates as his convoy attempts to move forward in Mosul.
04:15 GMT: Convoy halted by suspected roadside bomb - IS have planted huge improvised explosives devices along the route. 13:51 GMT: The day ends as it begins ... bomb disposal team dealing with a roadside bomb.
04:19 GMT: The EOD, or bomb disposal, team are attempting to safely detonate the device. 13:00 GMT: Abandoned sports pitch. In two days of these operations I haven't seen a single civilian. Everyone has fled. Above, helicopter gunship continues to attack Abu Saif town.
04:36 GMT: Bomb disposal team heading back to the suspected roadside bomb for a second time. It seems their controlled explosion hasn't worked. 12:44 GMT: Just passed two IS fighter corpses in a ditch. Looks like they were hit by a mortar.
04:36 GMT: No bang. And we can proceed. 12:27 GMT: Federal policeman, Ali Lazim Lafta, was injured by an IS drone which dropped a grenade on his unit.
04:36 GMT: EOD team checking for secondary bombs. 11:57 GMT: Coalition air strike on western Mosul. We can see the landmark Nineveh Hotel from here.
04:36 GMT: This will be slow progress if it continues.
Follow Quentin Sommerville on TwitterFollow Quentin Sommerville on Twitter
Iraqi forces have now all but surrounded the western part of Mosul.Iraqi forces have now all but surrounded the western part of Mosul.
Concern has been voiced by the UN about the welfare of civilians trapped in Mosul, amid reports that they could number up to 650,000. Concern has been voiced by the UN about the welfare of civilians trapped in the city, amid reports that they could number up to 650,000.
Leaflets warning residents of an imminent offensive were earlier dropped over the west of the city. Leaflets warning residents of an imminent offensive were earlier dropped over western parts.
Military officials say the western side of the city, with its narrow, winding streets, may prove a bigger challenge than the east. Military officials say west, with its narrow, winding streets, may prove a bigger challenge than the east.
They say that western Mosul, although slightly smaller than the east, is more densely populated and includes districts that are seen as pro-IS. Although slightly smaller than the east, it is more densely populated and includes districts that are seen as pro-IS.
All bridges from there to the west of the city, across the Tigris river, were destroyed.All bridges from there to the west of the city, across the Tigris river, were destroyed.
The offensive against the eastern part of the city was launched on 17 October, more than two years after jihadists overran Mosul before seizing control of much of northern and western Iraq. The offensive against the east was launched on 17 October, more than two years after jihadists overran Mosul before seizing control of much of northern and western Iraq.
The UN said in late January that almost half of all the casualties in Mosul were civilians.The UN said in late January that almost half of all the casualties in Mosul were civilians.
At least 1,096 have been killed and 694 injured across Nineveh province since the start of October.At least 1,096 have been killed and 694 injured across Nineveh province since the start of October.