A picture of a victim is seen among candles during a mourning ceremony for the victims of a Boeing 737 Ukrainian passenger plane crash in Tehran, Iran, on Jan. 11, 2020. (Xinhua/Ahmad Halabisaz)

Iranian President Hassan Rouhani said on Saturday that the country welcomes any international cooperation concerning Ukrainian plane crash, official IRNA news agency reported.

"Iran welcomes any international cooperation within the framework of international regulations which is aimed at clarifying dimensions of the incident," Rouhani made the remarks in a telephone conversation with Canadian Prime Minister Justin Trudeau.

He said that further investigation into the Ukrainian plane crash will be carried out to reach the final result.

Rescuers work beside the bodies of victims at the air crash site of a Boeing 737 Ukrainian passenger plane in Parand district, southern Tehran, Iran, on Jan. 8, 2020. (Photo by Ahmad Halabisaz/Xinhua)

In another phone talk with Ukraine President Volodymyr Zelensky, Rouhani said that "all those involved in the air disaster (of plane crash) will be brought to justice."

He said that the joint investigations between the Iranian and Ukrainian experts over the incident will continue and the judicial measures will "soon" start.

On Wednesday, a Ukrainian Boeing 737 passenger plane crashed near Tehran, killing all 176 people onboard.

People pay their respect during a candlelight vigil to honor victims of the Ukrainian passenger plane crash at Mel Lastman Square in Toronto, Canada, Jan. 9, 2020. (Xinhua/Zou Zheng)

Iran's armed forces on Saturday admitted that the Ukrainian plane was "unintentionally" hit by Iran and "human error" was to blame.