A Croatian hostage whom the Islamic State group claims to have beheaded is thought to have been kidnapped by a criminal gang in Egypt before being turned over to the jihadists, Croatia's foreign minister said Thursday.
Tomislav Salopek, a 31-year-old father of two working for a French engineering company, was seized last month from a car some 22 kilometres (14 miles) west of Cairo.
One group "believed to be bandits" initially abducted him and then demanded a ransom from his French employer, geoscience group CGG, eight days after the July 22 kidnapping, Foreign Minister Vesna Pusic told reporters.
After the demand, nothing more was heard about Salopek until August 5 when a video of him was posted online by a group presenting itself as Islamic State in the Egyptian province of Sinai, she said.
"Money was not requested anymore but (the demand was) the release of Muslim women from Egyptian jails," she said.
"It led the Egyptian (intelligence) services to the conclusion that we were talking about two organisations."
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Pusic said negotiations were impossible because no contact was ever made with the Egyptian authorities.
CGG confirmed Pusic's statement saying its affiliate Ardiseis had received an unsigned e-mail on the evening of July 30 with a photo of Salopek and a ransom demand, It did not specify the sum.
"The following day, Ardiseis answered the mail and asked for proof that Salopek was alive. There was no response. We tried the following day and the day after but we didn't get any response," CGG spokesman Christophe Barnini told AFP in Paris.
"We never entered into negotiations with them at any moment," he said.
The Islamic State group claimed Wednesday to have beheaded Salopek, posting a picture of what it said was the victim's body on IS-affiliated Twitter accounts.
The picture's authenticity could not be immediately verified, but Croatian officials including Prime Minister Zoran Milanovic have said they feared the worst.
"At this moment we are still not sure and have no definitive confirmation either from our side or the Egyptian side that the person in the photograph posted yesterday (Wednesday) is really Tomislav Salopek," Pusic said.