At least 13 people were killed in two car bombings in western Baghdad on Saturday night. A third blast killed another 15 people, Reuters news agency reported.

Al Jazeera's Imran Khan in the Iraqi capital, Baghdad, said the explosions happened within minutes of each other and could be linked to events in western Iraq.

Also on Saturday, a suicide bomber detonated his explosives belt in a market 28km north of Baghdad, between the towns of Tarmiyah and Mishahda, killing at least seven people and wounding 25 others. The area has been the scene of clashes between Iraqi forces and Islamic State of Iraq and the Levant (ISIL) fighters, who have taken control of large sections of northern and western Iraq this year.

In other violence, four Iraqi soldiers died in a friendly-fire incident in the town of Udaim, 90km northeast of Baghdad.

The soldiers, who had been wounded by ISIL fighters, were being taken to hospital when Shia volunteer fighters mistook them for ISIL fighters and fired a rocket-propelled grenade at their vehicle, police and medical officials said.

PHOTO CAPTION

Iraqi federal policemen search a car at a checkpoint in Baghdad, Iraq, Saturday, Oct. 11, 2014.

Al-Jazeera