Investigators are trying to determine what caused a plane crash south of Quebec City that killed two people.
A 63-year-old Quebec man and a 21-year-old woman from France died when the two-seater Grumman AA-1 went down in a river near Lévis,Que at around 2 p.m. Saturday.
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READ MORE: Small plane with two aboard crashes in river near Quebec City: TSB
Provincial and municipal police officers say they will question witnesses near the site today.
They say no hypothesis is excluded, including mechanical problems or pilot illness.
Transportation Safety Board officials have also been sent to the site.