Cuban authorities confirmed 110 out of 113 on board has been killed in a plane crash soon after takeoff from Havana.
Safety complaints against the mexican charter company Damojh who leased the 40 year-old Boeing 737 to Cubana have surfaced.
Authorities discovered last year the plane crew was allowing dangerous overloading of luggage on flights to Cuba from the Guyanese airport and has since been barred from Guyanese airspace.
Aviation authorities said experts will fly to Cuba to take part in the further investigation.