The group's Egyptian affiliate said two days ago it would kill 30-year-old Tomislav Salopek in 48 hours if the Egyptian government did not release jailed "Muslim women" — a reference to those detained in the government's crackdown on supporters of the Muslim Brotherhood and other Islamists.
Salopek, a surveyor in the oil and gas industry working with France's CGG Ardiseis, was abducted in Cairo last month.