The Sinai Province of the Islamic State (Isis) has released a video in which it threatens to behead a Croatian hostage if the Egyptian government does not exchange him for captive female Muslims.
The man, who identifies himself as 30-year-old Tomislav Salopek, an employee of geoscience company CGG, is shown wearing a yellow jumpsuit and kneeling beside a masked militant. He says he will be executed if the Egyptian government does not release "Muslim women arrested in Egyptian prisons".
Salopek says IS fighters abducted him on 22 July. Croatia's foreign ministry said last month that one of its nationals had been kidnapped in Cairo. It is unclear which hostages is the man referring to.
source from ibtimes.co.uk :
http://www.ibtimes.co.uk/isis-threatens-behead-croatian-tomislav-salopek-if-egypt-doesnt-release-muslim-female-1514247