Israeli minister says 'has no clue' who killed Iranian nuclear scientist

Israeli cabinet minister Tzachi Hanegbi said on Saturday he had "no clue" who was behind the killing of a top Iranian nuclear scientist in Tehran, reports US News.

"I have no clue who did it. It's not that my lips are sealed because I'm being responsible, I really have no clue," Hanegbi, a confidant of Prime Minister Benjamin Netanyahu, told N12's Meet the Press.

Mohsen Fakhrizadeh, who became the face of Iran's controversial nuclear program, was killed in a district east of Tehran on Friday, in what Iranian officials are calling an assassination.

Iran's president has blamed Israel for the killing of Fakhrizadeh and said it would not slow down the country's nuclear programme.

Hassan Rouhani also said Iran would retaliate over Fakhrizadeh's killing at a time of its choosing.

Iran's Supreme Leader Ayatollah Seyyed Ali Khamenei has vowed revenge after the killing of the country's chief nuclear scientist, as top officials pile blame on Israel, reports CNN.