Violence has killed more than 570 people in Iraq so far in May and over 1,000 in less than two months, according to AFP figures based on security and medical sources.
The government's public response has so far been limited to speeches, a shakeup of senior security officers and announcing a series of vague new measures relating to security.
In the deadliest attack, a car bomb exploded in south Baghdad as people cheered a bride ahead of her marriage, killing 16 people and wounding 42, officials said.
In Abu Ghraib, west of Baghdad, gunmen shot dead an army brigadier general at his home, while two roadside bombs exploded near a football pitch in Baquba, north of the capital, killing one person and wounding nine.
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Gunmen also killed an anti-Qaeda militia leader southwest of the northern city of Kirkuk, and a roadside bomb north of the city of Tikrit targeted the governor of Salaheddin province's convoy, wounding four of his guards.
Iraq has seen a heightened level of violence since the beginning of the year, coinciding with rising discontent among the Sunni Arab minority that erupted into protests in late December.
Analysts say government policies that have disenfranchised Sunnis have given militant groups in Iraq both fuel and room to manoeuvre among the disillusioned community.