Israel has assassinated an Iranian nuclear scientist shortly before the cease-fire between the two countries took effect, Iranian media reported Tuesday.Tel Aviv's underground tent cities: How Israelis found refuge from Iranian missiles00:00 / 34:18The scientist, Seyed Mohammad Reza Sedighi Saber, was killed in an Israeli strike in the northern province of Gilan. According to the local deputy governor, four residential units were completely destroyed in the attack, and nine people were killed and 33 others were injured.Saber was one of the Iranian nuclear scientists sanctioned last month by the U.S. State Department, heading the Shahid Karimi Organization. The group works on missile-and explosive-related projects for Iran's Organization for Defensive Innovation and Research, which is responsible for developing military technologies.The Shahid Karimi Organization worked, among other things, on research, testing and development projects for nuclear explosive devices.'Not happy with Israel': Trump slams Israel for Iran truce breach, tells IDF to hold backEuphoria, assassinations, secret drones: Can Israel's war stop Iran from going nuclear?In Gaza and in Iran: Military pressure alone produces neither security nor victoryOvernight into Tuesday, Israel issued an evacuation notice to residents in Tehran, after which the IDF spokesperson confirmed that the Israel Air Force had attacked missile launchers in western Iran aimed at Israeli territory. The IDF also confirmed it had killed a nuclear scientist, according to a government statement.The statement, which confirmed a cease-fire between Iran and Israel, summarized Israel's military achievements in Operation Rising Lion, chiefly "the nuclear and ballistic" threat.The military also "achieved full air control over Tehran's skies, inflicted severe damage on the military leadership and destroyed dozens of central Iranian government targets," the message read.Smoke and fire rises from Iraq's Taji military base in this screen grab obtained from a social media video released on Tuesday.Credit: Social Media/ReutersAt the same time, Iraqi authorities reported that drones had attacked Iraqi military sites and damaged two radar systems.After Israel detected Iranian fire toward northern Israel, and claimed that Iran had violated the ceasefire — a claim Tehran denied — the Revolutionary Guards reported that Israel had attacked Iran by 9:00 a.m., about two hours after the cease-fire between the countries went into effect.Defense Minister Israel Katz said that he had instructed the IDF to attack Tehran in response to the cease-fire violation. Chief of Staff Eyal Zamir also said that "in light of the serious cease-fire violation committed by the Iranian regime, we will attack with force."On Friday, the Wall Street Journal reported that Israel had killed 10 other experts tied to Iran's nuclear and weapons programs since the beginning of the war.According to the human rights organization Human Rights Activists, which monitors events in Iran, at least 974 people were killed in the Israeli attacks and another 3,458 were injured. Official Iranian officials are reporting lower numbers.In Israel, 28 people were killed and more than a thousand were injured in attacks in Be'er Sheva, Bat Yam, Ramat Gan, Rishon Lezion, Petah Tikva, Haifa, Bnei Brak and Tamra.