The earliest known attack took place on May 9, when one of Iran’s busiest shipping hubs, the Shahid Rajaee Port, experienced a major cyber-attack that brought the port terminal “to an abrupt and inexplicable halt” and caused “massive backups on waterways and roads leading to the facility”. On June 26, a massive  blast destroyed a liquid fuel production facility for ballistic missiles in Khojir, a military complex located 20 miles southeast of Tehran. Four days later, on June 30, there was another explosion at a medical clinic in the Iranian capital, which killed 19 people.

On July 2, a major blast and subsequent fire were reported at the site of the Natanz nuclear facility, which is situated 150 miles south of Tehran. The attack is believed to have targeted a laboratory facility housing advanced centrifuge systems for enriching uranium. The BBC reported on Monday that a previously unknown group calling itself “The Homeland Cheetahs” claimed responsibility for the attack. The group sent BBC reporters information about the Natanz blast, including a video of the incident, before it was reported by Iranian media. In its statement, the group claimed to represent dissidents in the Iranian military, but some speculated that it could be a front for a foreign intelligence agency. On Sunday, The New York Times said the Natanz blast was orchestrated by the Israeli Mossad.

On July 3, a large fire broke out in Shiraz, Iran’s fifth largest city, while on the next day a fire engulfed the Zargan power plant in Ahwaz, following a large blast that was reportedly audible several miles away. Also on July 4, a large leak of chlorine gas occurred at the Karoun petrochemical plant in Bandar-e Mahshahr, in Iran’s Khuzestan Province. The leak caused 70 workers at the plant to be hospitalized.

In recent days, Iranian officials have claimed that the above incidents have been part of a sabotage campaign orchestrated by the Mossad, and have warned Israel of an impending retaliation. At a press conference in Jerusalem last Thursday, reporters asked the Israeli Prime Minister Benjamin Netanyahu whether the country’s spy agencies were behind the attacks in Iran. Mr. Netanyahu responded by saying: “I don’t address such topics”.