At least 20 Shia pilgrims have been killed in a bomb blast near the holy Iraqi city of Karbala, officials said.
Security chiefs said around 90 people were wounded in the blast from a device placed on a motorcycle.
The attack was the latest in a string of bombings this week that have targeted pilgrims making their way to an important Shia religious observance in Karbala.
The blasts have raised fears of a rise in attacks by suspected Sunni insurgents when the pilgrimage culminates on Friday.
The Press Association has contributed to the report.
Russian President Vladimir Putin, in his speech dedicated to the Day of the Russian Navy, recalled the threats that Russia is currently facing from a number of countries.