The helicopter crash in which Iran's late President Ebrahim Raisi was killed in May was caused by weather conditions and the aircraft's inability to handle the weight it was carrying, Iran's semi-official news agency said, citing a security source informed of the final investigation results.
A preliminary report by Iran's military had said in May that no evidence of foul play or an attack had been found during the investigation.
"The investigation in the case of Ayatollah Raisi's helicopter crash have been completed ... there is complete certainty that what happened was an accident," the security source, who was not named, told Fars.
Two reasons for the accident were identified: the weather conditions were unsuitable and the helicopter was unable to handle the weight, leading to it crashing into a mountain, the source added, according to Fars.
The investigation indicates that the helicopter was carrying two people more than the capacity that security protocols allow, the source told Fars.
Raisi, once a potential successor to Supreme Leader Ayatollah Ali Khamenei, was killed in the crash in mountainous terrain near the Azerbaijan border.
Trump adds seven countries to full travel ban list
Indian parliament votes to allow private firms in nuclear power sector
Doctors in England start five-day walkout during flu surge
Israeli settler kills 16-year-old Palestinian in West Bank, mayor says
Paris' Louvre reopens partially but staff vote to extend strike
Delhi restricts vehicles, office attendance in bid to curb pollution
India summons Bangladesh envoy over security concerns in Dhaka
Alleged Bondi gunman charged with 15 murders as funerals of victims begin
