A year later, families cling to memories of their lost loved ones along with a few mementoes they received from the Iranian authorities.

Two people initially survived the crash, but one later died in a hospital. No cause for the crash has been determined.

Two TSB investigators took part in examining a readout of the cockpit voice and flight data recorders.

Transportation Safety Board of Canada officials in Paris on Monday confirmed the presence of flight recorders from the Ukrainian jet shot down by Iran in January.

Families of those killed on Ukraine International Airlines Flight PS752 expressed frustration Tuesday at the lack of progress as they launched a new group aimed at remembering their loved ones and pressing for those responsible to be brought to justice.

The criticism comes as Iran refuses to hand over black boxes after shooting down a plane with 176 people on board, including 57 Canadians.

All 176 people on board the plane were killed in the Jan. 8 crash. Canada, which had 57 citizens on board, and other countries that lost nationals have said the flight data and voice recorders should be analyzed abroad.

176 people including 57 Canadians were killed when the Iranian military shot down the Ukraine International Airlines passenger jet earlier this month.

The report, made by Iran's semi-official Tasnim news agency, quotes Hassan Rezaifar, a director in charge of accident investigations at Iran's Civil Aviation Organization.

Prime Minister Justin Trudeau reiterated that he still expects Iran to compensate the victims' families as well.