Iraq has hanged 36 men convicted over the killing of up to 1,700 military recruits at a former US base in 2014.
The massacre at Camp Speicher, near Tikrit, was carried out by fighters from so-called Islamic State (IS) as it seized territory across northern Iraq.
Outrage over the massacre of the mostly Shia cadets helped mobilise Iraq’s Shia militias in the fight against IS.
IS militants released photos and video documenting the massacre in 2014. Mass graves were found a year later.
The graves were discovered when Iraqi government forces recaptured the area.
“The executions of 36 convicted over the Speicher crime were carried out this morning in Nasiriyah prison,” a spokesman for the governor’s office in Dhiqar, the province of which Nasiriyah is the capital, told Agence France-Presse news agency.
The spokesman said that Justice Minister Haidar al-Zamili was present at the executions.
Prime Minister Haider al-Abadi had said after last month’s Baghdad bomb blast that killed more than 300 people that he wanted to speed up executions of terrorism convicts.
Those executed on Sunday, all believed to be Iraqi citizens, had been sentenced to death in February.
Photos and videos published by IS after the massacre showed soldiers being loaded on to vehicles and forced to lie face down on the ground before being shot dead.
Sign up here to receive daily email alerts of breaking news in Ghana. GhanaStar.com is your source for all Ghana News. Get the latest Ghana news, breaking news, sports, politics, entertainment and more about Ghana, Africa and beyond.