“There are two matters that people in charge should put in their to do list: 1- To follow up the atrocity and retaliate against those who were responsible for it. 2- To follow up Martyr Fakhrizadeh’s scientific and technical activities in all fields in which he was active,” Khamenei wrote Saturday in a tweet from an account often attributed to him, making a veiled reference to the country’s nuclear activities.

He added: “Our distinguish nuclear scientist in the defense of our country, Mr Mohsen Fakhrizadeh was killed by the oppressive enemies. This rare scientific mind lost his life for his everlasting great scientific work. He lost his life for God and the supreme leader. God shall reward him greatly.”

At a cabinet meeting Saturday, Iranian President Hassan Rouhani said: “The think tanks and the enemies of Iran must know that the Iranian nation and the officials in charge in the country arIe brave and determined to respond to the murder in time.”