BAGHDAD, Iraq (CNN) -- A drive-by shooting Friday in Baghdad marked the third day of attacks across the country that have killed 75 people, officials said.
Iraqis survey the damage after car bombs were detonated within minutes of each other Thursday in Mosul, Iraq.
Gunmen in a speeding car opened fire on a western Baghdad checkpoint run by the Sons of Iraq, killing two of their members, an Iraqi Interior Ministry official said.
The Sons of Iraq, also known as Awakening Councils, are made up of mainly former Sunni insurgents who turned on groups such al Qaeda in Iraq.
The Sunni militias created by the U.S. military are credited as a major factor in the drop in violence in Iraq.
In addition to the 75 people killed, 202 people have been wounded in the series of attacks that began Wednesday.
The most fatal one occurred Thursday when a double suicide bombing killed at least 35 people and wounded 65 others in the northern Iraqi city of Tal Afar in Nineveh province. Political tensions between Arabs and Kurds have recently increased in the region.
Another double bombing in northern Baghdad killed nine civilians and wounded 35, Interior Ministry officials said.
The Tal Afar bombings occurred a day after attacks on mainly Shiite targets in Nineveh -- including a car bomb in a Turkmen area of the provincial capital, Mosul -- left at least 19 people dead and dozens wounded.
Also a roadside bomb targeting a police patrol in the northern Iraqi city of Kirkuk killed a civilian bystander Thursday, a police official said.
U.S. forces pulled out of Iraq's urban centers June 30. The American military suggested keeping combat troops in Mosul beyond the withdrawal deadline, but the Iraqi government insisted on no exceptions for the date set in a security agreement between the two countries.
Also Thursday, at least seven people were killed and 25 wounded when a bomb detonated in a busy marketplace in Sadr City, the vast Shiite slum in Baghdad, an Interior Ministry official said.
Bomb blasts -- one from a rigged bicycle and another from a car -- in two predominantly Shiite neighborhoods of southwestern Baghdad wounded six people, the official said.
In the capital's central Karrada district, a roadside bomb targeting a convoy of Iraq's Central Bank governor killed one civilian bystander and wounded five, another Interior Ministry official said. The governor escaped unharmed.
Also at least one Iraqi civilian was killed and five others wounded in another bombing Thursday evening.
CNN's Jomana Karadsheh contributed to this report.