A suicide car bomber has killed 13 troops and allied Sunni militiamen near the insurgent-held capital of the western Anbar province in Iraq.
The suicide bomber used an army vehicle to approach forces advancing south-east of Ramadi, west of Baghdad. Seven people were wounded in the attack.
There was no immediate claim of responsibility for the attack, but it bore the hallmarks of the Islamic State group, which controls Ramadi and much of the vast Sunni province.
Troops and allied militias have been battling IS militants for months in Anbar but have not been able to dislodge them from areas under their control.