At least 15 people have been killed in a bomb attack on Shia pilgrims in the southern Iraqi city of Basra, Iraqi police and security sources say.
The attack was aimed at pilgrims marking the festival of Arbain, one of the main holy days of the Shia calendar, the BBC reports.
Security had been tight amid fears of insurgent attacks during the festival.
Scores of people have been killed in attacks on pilgrims in the last few weeks.
