An Iranian rocket scientist who was working on developing top-secret missiles and drones has died under mysterious circumstances.
Dr Ayoob Entezari reportedly worked at a research and development centre in the city of Yazd in central Iran before his death on May 31.
Initial reports suggested he died of food poisoning, but local authorities denied this, saying he died of an unspecified illness and accused "one of his relatives" of looking for 15 minutes of fame by spreading a "rumour online".