Earlier on Thursday a U.S. official, citing an extensive review of satellite data, said Washington had concluded with a high degree of certainty that anti-aircraft missiles brought the plane down.
US President Donald Trump said on Thursday the deadly crash could have been a mistake and he did not believe it was a mechanical issue.
"Iran's AAIB is the lead investigative agency and questions regarding the progress of the investigation should be directed there".
The Iranian report suggested that a sudden emergency struck the Boeing 737, operated by Ukrainian International Airlines, just minutes after taking off from Imam Khomeini International Airport early on Wednesday.
In a press conference on Thursday, Canadian Prime Minister Justin Trudeau said that intelligence from "multiple sources" - both from Canada and its allies - indicated it was "highly likely" that an Iranian missile brought down the plane.
Iran denied that the airliner had been hit by a missile.
Tehran blamed a technical malfunction while United States and Canadian authorities said Iran shot down the aircraft perhaps unintentionally.
One US official said that US satellites had detected the launch of two missiles shortly before the plane crashed, followed by evidence of an explosion.
The New York Times said it had obtained a video appearing to show an Iranian missile hitting a plane near Tehran airport.
"The families of the victims want answers, Canadians want answers, I want answers", he said.
And "the debris collected has been in a very limited area".
Earlier, head of the CAO, Ali Abedzadeh, revealed that the black boxes were damaged during the crash and the country might seek foreign help - from Russia, Canada, France or Ukraine in particular. "We confirm that the airplane was on fire for 60 to 70 seconds", Abedzadeh said.
Canada's transportation safety board on said yesterday it had accepted an invitation from Iran's civil aviation authority to join the inquiry. USA military satellites detect infrared emissions from heat. The company is reeling from two deadly crashes of 737 MAX planes, including the one in Ethiopia, that led to the model's grounding a year ago.
"This is an attempt to wake your conscience.do not participate in the counterattack of those hostile to Iran after the initial slap", Hesamodin Ashena tweeted, referring to Iran's missile attack on U.S. forces in Iraq.