Two suicide bombers targeted Shi'ite Muslims in Iraq on Saturday, killing at least 60 people on the eve of the anniversary of one of their imams' deaths, police and medics said.
In Baghdad, a suicide bomber detonated his explosives at a checkpoint, killing at least 48 Shi'ite pilgrims on their way to visit a shrine in the Kadhimiya district.
In the northern city of Mosul, unidentified gunmen shot two Iraqi television journalists dead as they were filming, security sources said.
No group immediately claimed responsibility for either of the bombings, but such attacks are the hallmark of Sunni Islamist al Qaeda, which views Shi'ites as non-believers and has been regaining momentum this year.
Earlier on Saturday, another suicide bomber blew himself up inside a cafe in a mainly Shi'ite town of Balad, 80 km (50 miles) north of Baghdad, killing 12 people. The cafe was targeted in an almost identical bombing 40 days ago.
Relations between Islam's two main denominations have come under acute strain from the conflict in Syria, which has drawn fighters from Iraq and the wider Middle East into a sectarian proxy war.
More than 6,000 people have been killed in violence across the country this year, according to monitoring group Iraq Body Count, reversing a decline in sectarian bloodshed that had climaxed in 2006-07.