The Britain-based Syrian Observatory for Human Rights said on Sunday Daesh members have decapitated three men in an area close to al-Tabqa air base, located in the northern province of Raqqa and some 400 kilometers (250 miles) northeast of the capital, Damascus, after accusing them of collaborating with Syrian forces.
The terrorists killed another man in the western side of the city of Raqqa on charges of sorcery.
Moreover, three men were shot dead and then crucified by Daesh in the conflict-ridden northern province of Aleppo.
On February 4, the observatory reported that Daesh has put 50 people to death in Syria since the beginning of the year over allegations of spying, being enemy combatants and other reasons. The executed were mostly killed by beheading or shooting.
Daesh recently released a video online showing the burning of Jordanian pilot Muath al-Kasasbeh, who was taken hostage in December.
The pilot was seen dressed in an orange jumpsuit and surrounded by flames of fire inside a metal cage.
Kasasbeh was captured by Daesh on December 24, 2014, after his F-16 jet crashed while flying over northern Syria on a mission against the terrorists.
Last month, the militant group also released video footage purportedly showing the execution of Japanese prisoner Kenji Goto.
