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.

A man detonated an explosive belt at the external gate of the mausoleum at around 11 pm (2000 GMT), allowing several gunmen to storm the site and start shooting at worshippers on the occasion of the Eid al-Fitr festival, according to the security sources.

At least one gunmen blew himself up in the middle of the crowd while another was gunned down by the guard of the mausoleum before he could detonate his explosive belt.The site also came under rocket fire during the attack that was claimed by Islamic State. The ultra-hardline Sunni group said in a statement the attack was carried out by three suicide bombers wearing explosive belts.

The militants have lost ground since last year to US-backed government forces and Iranian-backed Shi'ite militias, but recent bombings showed they still have the ability to strike outside the territory they control in northern and western Iraq.

A massive truck bomb killed at least 292 people in a mainly Shi'ite shopping area of central Baghdad over the weekend, in the deadliest single bombing since the US-led invasion that toppled Saddam Hussein in 2003.