Isis execute 33 people in terror group's 'largest mass killing so far this year'
Isis have killed 33 people in an execution-style attack in eastern Syria, the terror group's largest mass killing so far this year.
Monitoring group Syrian Observatory for Human Rights report the mass killing to have taken place in the al-Mayadin desert near the strategic city of Deir Ezzor on Wednesday morning.
It said activists were "able to monitor" the incident.
They called it "the largest execution operation carried out by the Islamic State organization in 2017."
The report, detailed by CNN, said that the victims were aged between 18 and 25 and were "killed by sharp tools".
They were not aware if the victims were Syrian government forces, allied militia or rebel factions.
Isis are reported to have killed at least 22 people in the Iraqi city of Tikrit, also on Wednesday.
It is understood gunmen opened fire on police and civilians before they blew themselves up.
Up to 31 people were injured in the attack.