In pictures: Mosul attack

1 of 6 The mess tent of a US army camp in Mosul came under attack at about noon as the facility was filling up with diners.

2 of 6 About 20 people died and 50 were injured in the attack at Camp Merez south-west of Mosul.

3 of 6 The tent, where the soldiers gathered on a regular basis, was considered a potential target.

4 of 6 The thin roof provided no protection from enemy fire.

5 of 6 Soldiers comforted one another after the grim task of retrieving the dead.

6 of 6 An emergency meeting after the attack was suspended briefly for prayers in which the camp chaplain asked for God's help and healing.