Al-Jumaili, a veteran freelance cameraman, was executed in Idlib, according to human rights groups and news reports.
A fixer who worked with the journalist but did not want to be identified for security reasons told CPJ that they were contracted by a Spanish production company, which also did not want to be identified for fear of reprisal.
Al-Jazeera reported that in his last known conversation, al-Jumaili told one of its journalists who contacted him over Facebook regarding an assignment in Iraq that he had been kidnapped by Al-Qaeda affiliate Islamic State of Iraq and Sham (ISIS). Two days later, he was shot in the head, the network reported.
Al-Jumaili was originally from Fallujah, an Iraqi city that gained notoriety during the U.S. occupation as a hotbed of radical Islamist activity. He was known for covering military operations there.