The attack, which killed 35 people has reignited fears of an escalation of the sectarian strife between Iraq's Shi'ites and Sunnis.
Islamic State claimed a triple suicide attack on Thursday evening near a Shi'ite mausoleum north of Baghdad, which killed at least 35 people and wounded 60 others, according to Iraqi security sources.
The attack on the Mausoleum of Sayid Mohammed bin Ali al-Hadi reignited fears of an escalation of the sectarian strife between Iraq's Shi'ites and Sunnis.
The Shi'ite form a majority in Iraq but Sunnis are predominant in northern and western provinces, including Salahuddin where the mausoleum is located.