An autopsy is scheduled to take place in Montreal over the next few days on a 53-year-old Gatineau man who died Sunday while scuba diving at Morrison's Quarry in Chelsea.
MRC des Collines Police say Marco Laplante likely panicked and ran out of oxygen.
He had obtained his general certicifaction less than a year ago and Sunday was his first outing under the ice this year.
Laplante was diving with some friends.
An instructor who happened to be at the quarry with a separate group made an emergency dive and recovered his body.
Police say his diving equipment will also be extensively tested at the forensics lab in Montreal.