The latest attacks come a day after 35 people were killed nationwide, most of them in a series of car bombs across Baghdad, as the country grapples with a prolonged political deadlock and months of protests from its Sunni Arab minority.
No group immediately claimed responsibility for the attacks, but Sunni militants linked to Al-Qaeda frequently target Shiite Muslims -- both the protesters and the pilgrims were from Iraq's Shiite majority -- whom they regard as apostates.
Two suicide bombers blew themselves up inside a tent packed with Shiite Turkmen protesters in the town, killing at least 11 people and wounding 55 others, the town's interim mayor and a doctor said.
Among the dead were a former deputy provincial governor and his two sons, as well as a former provincial councillor.
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The protesters had been rallying over poor security in the town, which is regularly hit with attacks.
Analysts often voice worry that the tensions could spill over into open conflict between central government forces and Kurdish troops.
Also today, a magnetic "sticky bomb" attached to a minibus went off as Shiite pilgrims were on their way to the holy shrine city of Karbala for Shabaniyah commemorations, which mark the anniversary of the birth of Imam Mehdi, the so-called 12th imam and a key figure in Shiite Islam.
Early this morning, meanwhile, gunmen wounded two guards outside an Assyrian church in east Baghdad.
Today's attacks struck a day after a wave of car bombs across the Iraqi capital and unrest north of Baghdad killed 35 people, with the country struggling with a prolonged political deadlock and violence at its worst levels since 2008.
Attacks have increased markedly since the beginning of the year, coinciding with rising discontent among the Sunni Arab minority that erupted into protests in late December.