A top Iranian security official on Monday accused Israel of using "electronic devices" to remotely kill a scientist who founded the Islamic Republic’s military nuclear program in the 2000s.

Ali Shamkhani, the secretary of the country’s Supreme National Security Council, made the comment at the funeral for Mohsen Fakhrizadeh, where Iran’s defence minister separately vowed to continue the man’s work "with more speed and more power." Israel, long suspected of killing Iranian nuclear scientists over the last decade, has declined to comment on the attack.