Amir Abdollahian, an advisor to the Speaker of the Iranian Parliament, announced that some of the participants in the assassination of Iranian nuclear scientist Mohsen Fakhrizadeh were arrested last month, promising to "respond soon."
The advisor to the Iranian Parliament Speaker said, "The perpetrators of this assassination, some of whom were identified and arrested by the security services, will not escape justice."
"We have identified those who ordered the assassination of Fakhrizadeh, and they will be answered soon," he told Iranian television.
On the 27th of last month, Tehran announced the death of Fakhrizadeh from his wounds after he was targeted by "terrorist elements" in the city of Absard in Damavand Province (east of Tehran).
An official TV correspondent from the scene stated that a small truck carrying explosives exploded in front of the nuclear scientist's car, and gunmen opened fire on it.
Iranian officials pointed the finger at Israel.
Fakhrizadeh is described as the head of the "Iranian nuclear program", which is being fought by the United States and Israel, which seek to prevent Tehran from acquiring nuclear weapons, while Iran asserts that it is only seeking nuclear energy and not weapons.