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The blasts came a day after a suicide bomber pretending to ask for help assassinated Brig. Gen. Ali Aouni, the head of the Iraq Defense Ministry’s intelligence academy, and three of his bodyguards in the northern city of Tal Afar.

Sunday’s attacks brought to more than 100 the number of people killed in violent attacks in Iraq since the start of the month. A total of 178 were killed in January attacks, according to an Associated Press count.

• Associated Press writers Sinan Salaheddin and Sameer N. Yacoub contributed to this article.