Four separate blasts hit Iraq on Tuesday, killing one person and leaving seven injured in various cities, police sources and witnesses told the German Press Agency dpa.
A driver died when a bomb attached to his truck went off in near al-Jamhuriya Bridge, central Falluja, a police source said.
Two consecutive bombs detonated in al-Ameriya area western Falluja, which is the biggest city of Anbar province and lies 45 kilometres west of Baghdad.
The first bomb targeted Sahwa fighters, who are Sunni fighters who supported the government in its fight against al-Qaeda and helped restore order in the country, while the second went off ten minutes later in the same place after an army patrol passed by.
Noone was injured in these two blasts, witnesses told dpa.
Seven protestors were injured when a roadside bomb hit a demonstration in al-Khales district, in the northeastern Baquba city, a source in al-Khales police said.
Around 500 people took to the street demanding the execution of those involved in recent bombings in the district. On May 21, a car bomb killed 30 people and injured at least 80 in al-Khales.
Earlier on Tuesday, gunmen wearing military uniforms killed a man and his wife when they stormed the couple's home in al-Mahmoudiya city, south of Baghdad, police sources said.
Although the level of sectarian violence in the aftermath of the 2003 US-led invasion has fallen sharply in the past two years, political tension related to the formation of a new government remains.