Iraqi security forces have clashed sporadically with militants who burned four police stations in the city of Ramadi, west of Baghdad, an AFP journalist says.
Iraqi forces battled militants in Fallujah on Monday as clashes spread to a second city after an anti-government protest camp was demolished, a police officer said.
Suicide bombings and other attacks have killed 30 people in Iraq, and authorities have found the bodies of 19 others shot dead in Baghdad.
Iraqi Prime Minister Nuri al-Maliki has warned that the country is facing a "war of genocide," as officials say militants have killed 49 people in two days of attacks.
Gunmen and suicide bombers have killed 25 police and three civilians in a series of coordinated attacks in Iraq's al-Anbar Province.
Two bombs exploded near a checkpoint run by government-allied militiamen in western Iraq on Friday, killing at least 11 people in the latest strike by militants seeking to destabilize the country.
Gunmen have overran an Iraqi army checkpoint and opened fire on a trailer packed with policemen breaking their Ramadan fast, killing 14 in the country’s restive western Anbar province, authorities say.
Fresh violence has left eight people dead in Iraq, including a police officer, his wife and two children, with gunmen having kidnapped 10 security force's personnel.