Suspected Islamic State group jihadists shot dead a man as he emerged from prayers at a mosque north of Baghdad and wounded three others, police said on Monday.

Iraqi Prime Minister Haider al-Abadi has sacked a number of electricity ministry officials, his office said on Thursday, in the latest attempt to quell public anger at chronic power cuts.

More than 300 people including around 100 foreigners have been sentenced to death for belonging to Islamic State.

In the oil hub of Basra, about 3,000 protesters gathered outside the headquarters of the provincial governorate.

Two women from the Philippines kidnapped in Iraq on Saturday have been freed, the Diyala province police chief said on Sunday.

Tarik Jadaoun -- known by his nom de guerre Abu Hamza al-Beljiki -- earlier pleaded not guilty to a range of terror, insisting he had "got lost" and pleading for mercy.

There was no immediate claim of responsibility, but most such attacks in Iraq are the work of the Islamic State jihadist group.

At least 25 people were killed and 63 wounded in a twin suicide bombing in central Baghdad on Monday, the Iraqi health ministry said on its Facebook page.

The tremor hit the Iranian province of Kermanshah where an earthquake killed 620 people in November, Iranian state TV said.

An Iraqi military parade celebrating final victory over Islamic State is underway in Baghdad's heavily fortified Green Zone, an Iraqi military spokesman told Reuters on Sunday.

Kurdish authorities in Iraq offered on Wednesday to put an independence drive on hold, stepping up efforts to resolve a crisis in relations with Baghdad via dialogue rather than military means.

The vote, expected to deliver a comfortable "yes" for independence, is not binding. However, it is designed to give Massoud Barzani a mandate to negotiate the secession.