The assassination comes on the anniversary of the assassination of Iranian IRGC Quds Force commander Qasem Soleimani.
Palestinian-French lawyer Salah Hamouri is accused of numerous offenses, like PFLP membership and trying to kill former Chief Rabbi Ovadia Yosef.
The officials added that the rate of attempts of Iranian covert action in the West has drastically increased in the past two years.
The assassination comes just days after IRGC Col. Davoud Jafari was killed in a roadside bombing near Damascus that Iran has blamed on Israel.
The hired killer said in his confession that he flew from Dubai to Georgia on September 14 to assassinate the Israeli businessman.
The would-be assassin, also a Pakistani national, had received information and instructions to kill the target from organizers living abroad.
Former PM Imran Khan rejected police report on failed assassination attempt, will resume march to capital to demand early elections.
Defense Minister Benny Gantz went off script and lashed out at the Right's conduct during the Israeli election campaign.
A number of MKs addressed the fact that this year's memorial will be held as Ben Gvir prepares to enter the new government.
Rabin, a former prime minister, IDF chief of staff and Israeli war hero, was assassinated during a pro-Oslo Accords rally in Tel Aviv.