''We've had no results back so we can't comment,'' he said. To follow international protocol, autopsy results would only be released after the family had been notified.
The bodies of sisters Audrey, 20, and Noemi, 26, were found dead in a room at the Palm Residence Phi Phi from a mysterious cause on June 15.
Autopsies were performed on the women at the Forensics Department of Bangkok's Ramathibodi Hospital on June 19 with a second round of autopsies taking place in Canada on June 22.
Results from the first autopsies are due to be released next Tuesday by officials in Bangkok. No date has been set for release of the results of the second autopsies.
The case has puzzled investigators so far but doctors say there is no point in speculation. The mysterious deaths mirror those of American Jill St Onge, 27, and Norwegian Julie Bergheim, 22, on Phi Phi in May, 2009.
Ms St Onge was cremated but Ms Bergheim's body was returned to Norway where a second autopsy that extended over a period of months failed to produce a reason for her death.
The Belanger sisters are due to be buried on Saturday.