Iran's top nuclear scientist Mohsen Fakhrizadeh has reportedly been killed in an apparent assassination.
According to Iranian state media, photographs from the scene showed a car with its windshield blown in and glass and blood all over the street.
Fakhrizadeh was head of the research center of new technology in the elite Revolutionary Guards and was considered one of the masterminds of Iran's controversial nuclear program.
Iran has said it linked the assasination to Israel. Israeli Prime Minister Benjamin Netanyahu's office has not commented.
According to Iranian Foreign Minister Zarif, the killing was "cowardice — with serious indications of Israeli role."
"Terrorists murdered an eminent Iranian scientist today," Zarif tweeted. "This cowardice — with serious indications of Israeli role — shows desperate warmongering of perpetrators Iran calls on int'l community — and especially EU — to end their shameful double standards & condemn this act of state terror."
Major General Mohammad Bagheri of the Iranian Armed Forces says there will be "severe revenge" against "the killers" of Fakhrizadeh.