The UN human rights staff received reports of extrajudicial killings and summary executions in the Mosul area.
Isis has said its suicide bombers used assault rifles and grenades over the course of a four-hour assault.
A US military spokesman said the fighting is ongoing as Iraqi forces send reinforcements.
Trump said it is 'a horrible, horrible situation that's going on (in Mosul)' and the US is looking 'so dumb'.
Up to half a million child refugees are in grave danger, warns Unicef.
Soldiers went missing during heavy fighting in Gashigar village, on the border with Niger, on 17 October.
Human Rights Watch calls for an investigation to identify those responsible for the strike.
One refugee claimed families were thrown out of their tents while they were still in them.
Daesh militants launched a second counter-offensive since operation to recapture Mosul began.
Iraqi forces scour derelict buildings for Isis fighters still hiding out in the towns.
US soldiers are wearing masks to protect against sulphur fumes.
US Defense Secretary Ash Carter has arrived in Baghdad to assess the ongoing Mosul offensive.
Iraqi forces have now launched a new push to retake the town of Hamdaniyah, 20km to the southeast of Mosul.
The Arabic 'meem' symbol spray-painted on Mosul's walls is the most visible sign of resistance to Isis rule.
Isis militants stormed the city at dawn today, killing at least 19 people in a bid to divert attacks on Mosul.
The young Isis militant celebrates as he finds out that he will be the next fighter to blow himself up
From intelligence gathering to disrupting online propaganda - will hacking help?
Terrorism today is an end in itself rather than a means to an end as the IRA and PLO would have conceived of it.
Defiant Alghad Radio connects the people trapped inside Mosul with the outside world.
Ten gunmen from the group boarded the ship, kidnapping its captain and one crew member.
Gunfire rings out in city as militants wearing suicide vests target police headquarters and government buildings.
In accepting the verdict, Dodi Suridi, 23, said that it was 'the risk of being a terrorist'.