Add your description here. [custom_adv] An investigation found that "missiles fired due to human error", President Hassan Rouhani said. He described the crash as an "unforgivable mistake". Add your description here. [custom_adv] The military said the jet turned towards a sensitive site belonging to homeland's Revolutionary Guards and was then mistaken for a cruise missile.homeland had previously rejected suggestions that it was to blame. Add your description here. [custom_adv] The downing of Ukraine International Airlines flight PS752 on Wednesday came just hours after Iran carried out missile strikes on two airbases housing US forces in Iraq. Add your description here. [custom_adv] The strikes were a response to the killing of senior persian commander Qasem Soleimani in a US drone strike in Baghdad on 3 January.The military apologised for downing the plane, saying it would upgrade its systems to prevent such "mistakes" in the future. It added that those responsible would be held accountable and prosecuted. Add your description here. [custom_adv] Ukraine International Airlines denies that the plane veered from its expected course before the crash. It says officials should have closed the airport.Brig-Gen Amir Ali Hajizadeh, the Revolutionary Guards aerospace commander, said the force took "full responsibility" for the crash. Add your description here. [custom_adv] He said a request had been made for a no-fly zone in the area before the incident but - for reasons that are unclear - this was rejected.Gen Hajizadeh also said the aircraft was shot down by a short-range missile that exploded next to it. He said he informed the authorities about what had happened on Wednesday, days before Iran publicly admitted its involvement. Add your description here. [custom_adv] homeland's Supreme Leader Ali Khamenei ordered the military to investigate "the possible shortcomings or mistakes" that led to the crash.In a statement, he said there was "proof of human error" and confirmed that he had "requested the relevant authorities to take necessary measures to prevent" it happening again. Add your description here. [custom_adv] Taking responsibility for such a tragic error is highly unusual, but so is the crisis that now confronts the Islamic Republic.homeland has decided it has to own this disaster to avoid it triggering another war of words with the West or exacerbating further anger and anguish among its own people, who are reeling from one calamity after another. Add your description here. [custom_adv] Make no mistake, this admission was an act of de-escalation.The repercussions at home may soon be clear. homeland's foreign minister has already sought to shift blame by saying it was "a crisis caused by US adventurism". Add your description here. [custom_adv] Ukrainian President Volodymyr Zelensky called on homeland to punish those responsible. "We expect Iran... to bring the guilty to the courts," he said.Elsewhere, the president of Ukraine International Airlines said: "We didn't doubt for a second that our crew and our plane couldn't be the cause for this horrible crash". Add your description here. [custom_adv] "These were our best guys and girls. The best," Yevhenii Dykhne said of the nine crew members who were on board.