 Tehran. Israel, behind recent drone attack on Iranian military facility. A preliminary probe into the recent attack on an Iranian military facility in Isfahan shows that Israel was responsible for it. The ISNA news agency quoted Amir Said Iravani, permanent representative of the Islamic Republic of Iran to the United Nations, as saying. The results of a preliminary investigation show that the Zionist regime was behind the attack on the Iranian Defense Ministry facility in Isfahan, with the actions by the regime violating international law and being condemned. The Iranian envoy said in a letter to the UN Secretary General and the President of the UN Secretary Council, Iran reserves the legitimate and inherent right to defend its national security and firmly respond to any threat or wrongdoing by the Zionist regime wherever and whenever it deems necessary. Iravani emphasized. According to ISNA, Iran's UN envoy called on the United Nations Security Council to condemn the hostile rhetoric of the Israeli government. The IRNA news agency reported on Sunday night that a powerful explosion rocked the city of Isfahan in central Iran. Later, the Iranian Defense Ministry said that a drone attack had been attempted on one of its centers on last Saturday. One drone was downed and the other two hit the defense traps and exploded. Iran's Tauras said. No one was hurt and minor damage was incurred. The facility's purpose was not clear and neither was how much damage the strike caused. But Isfahan is a major center of missile production, research and development for Iran, including the assembly of many of its Shahab medium range missiles which can reach Israel and beyond. Israel appears to have been behind a drone attack on a military factory in Iran.