Two nearly simultaneous bombs targeted worshippers streaming out of Muslim prayers north of Baghdad Friday, killing at least 30 people in the latest deadly surge in violence.

Two nearly simultaneous bombs targeted worshippers streaming out of Muslim prayers north of Baghdad Friday, killing at least 30 people in the latest deadly surge in violence.

Two roadside bombs went off outside the al-Salam mosque in Baquba at around midday as Muslims left after a prayer session.

Thirty people were killed and 24 wounded in the twin explosions, according to an army major and Ahmed al-Azzawi, a doctor at the city's main hospital.

Three car bombs in and around the city killed 10 people on Tuesday.

Attacks also struck elsewhere in Diyala. Another bombing targeted a mosque in the town of Khanaqin, killing one person, and a car bomb at a market north of Baquba wounded five.

In the restive northern province of Nineveh, a shooting and a bombing killed a soldier and a municipal official.

Although Iraq has seen a spike in violence that has already left more than 4,000 people dead this year, officials have sought to tackle the violence with high-profile operations targeting militants and tough traffic restrictions in the capital.

They have  vowed to press on with the campaign, which they say has led to the capture of hundreds of fighters and the killing of dozens more, as well as the dismantling of training camps and bomb-making sites.