At least 30 people were killed when bombers struck a wedding ceremony late Wednesday in a village in central northern Iraq, just hours after local military announced it had taken control of a Daesh prison near Mosul.
Local medical and security sources said attackers wearing explosive belts blew themselves up in al Hajaj village, close to Tikrit and about 170 kilometers north of Baghdad.
Security forces cordoned off the area and imposed a wider curfew for fear of more attacks.
Twenty-six people were also wounded in the bombing and there has been no claim of responsibility so far.
Iraqi television channel al Sumaria said at least four suicide attackers carried out the assault.
Such suicide attacks have previously been claimed by the Daesh extremist group in apparent retaliation for the Iraqi military's offensive on Mosul, the group's stronghold in Iraq.
Troops are currently engaged in an operation to dislodge Daesh fighters from western Mosul and have been moving north, closer to the old city center. They forced the extremists out of the eastern side of the city almost a month ago.
Earlier, the Iraqi military announced that it had taken control of Daesh's notorious prison northwest of Mosul.
Military commander Brigadier Najem al Jabouri told dpa that troops managed to completely take control of Badoush village and the Badoush prison complex.
He added that the operation saw at least 30 militants from Daesh killed.
There was no information as to whether any inmates were found inside the prison.
Daesh took control of Badoush village in June 2014 and the extremist group reportedly imprisoned Yazidi women and executed many people there.
According to Human Rights Watch (HRW), the militants executed up to 600 inmates at Badoush prison on June 10, 2014. The militants forced Muslim Shia inmates to kneel along the edge of a nearby ravine and shot them with assault rifles and automatic weapons, HRW said.
It reported that survivors also said the Daesh gunmen also killed a number of Kurdish and Yezidi inmates who were imprisoned in the prison.