"The US is complicit in all of these crimes and...has to accept the repercussions," Iran's parliament speaker Mohammad Baqer Qalibaf said.
Commenting on Nasrallah's killing, Iranian Foreign minister Abbas Araqchi said Israel "will not rest" and the action would not go unanswered.
The unit is responsible for global terror activities outside of Lebanon and is closely aligned with Iran’s Islamic Revolutionary Guard Corps.
Nilforoushan was a key player in Iranian actions in the region, advising Hezbollah on military and diplomatic affairs
IDF strikes also targeted Hezbollah weapons depots and manufacturing sites in Beirut, Tyre, and the Bekaa Valley.
The Iranian hacking team, known as APT42 or Charming Kitten, is known for placing surveillance software on mobile phones.
Swedish authorities revealed that Iran hacked a messaging service last year, sending thousands of revenge messages against Quran burners in Sweden.