Baghdad (CNN) -- Three people, including two police officers, were killed Friday in separate attacks in Iraq, officials said.
The two officers were killed when gunmen attacked a police checkpoint in central Tikrit, about 160 kilometers (100 miles) north of Baghdad, police said. Two others were injured in the attack.
In a southwestern Baghdad neighborhood, two other officers were wounded when a roadside bomb hit a police patrol.
Another bomb exploded inside a popular restaurant in southern Baghdad, killing a civilian and wounding five others.
Last month, at least 43 Iraqi police officers were killed and 78 others were wounded, an official at Iraq's interior ministry told CNN.
Overall violence in Iraq has dropped drastically over the past two years compared with the height of the sectarian violence in 2005 to 2007, but such attacks continue.