At least 12 people were martyred and dozens more wounded in Iraq Friday in the latest wave of violence sweeping across the country.

At least 12 people were martyred and dozens more wounded in Iraq Friday, security and medical officials said, in the latest wave of violence sweeping across the country.

A roadside bomb exploded in the morning in the main market in Al-Husseiniyah on Baghdad's northeast outskirts, and another went off after emergency personnel arrived, AFP quoted an interior ministry official as saying.

A medical source at the Sheikh al-Dhari hospital said the facility had received eight bodies and more than 50 wounded from the blasts, while a health ministry source put the toll at 13 killed and about 100 wounded.

Meanwhile, gunmen with silenced weapons opened fire on a police checkpoint in Bayaa in south Baghdad, killing six policemen, Al-Manar TV reported.

And a suicide car bombing and mortar rounds killed one person and wounded 12 in Samarra, north of Baghdad that houses the holy shrine of Imam Hasan Al-Askari (AS).

The suicide bomber targeted a police checkpoint at the southern entrance of Samarra, killing an Iranian pilgrim and wounding 10 other people.

Seven Iranian pilgrims, two police and a soldier were wounded, a police lieutenant colonel and a medical source from Samarra hospital said.

Two more Iranian pilgrims were wounded by two mortar rounds that exploded in the area, the same sources said.

With the latest violence, at least 160 people have died in attacks in Iraq more than the number of people killed during the entire month of May, according to official figures.

On June 13, 72 people were martyred in a string of attacks across the country that was later claimed by Al-Qaeda's front group, the Islamic State of Iraq.