A 55-year-old Tecumseh man has died while diving in the St. Lawrence River near Brockville, according to Leeds County OPP.

OPP say they are investigating after the death that took place on Sunday. Police were called to assist at about 2 p.m. with Leeds and Greenville EMS to a report of a diver being pulled unconscious from the water near Sparrow Island.

The man was brought to St. Lawrence Park where he was transported by paramedics to hospital, where he was declared deceased.

He has been identified by police as Raymond Bloch,55, of Tecumseh.

The Ontario Office of the Chief Coroner is leading the investigation.

It is unknown at this time whether the death is related to the scuba diving, or a medical cause.

A post-mortem examination is scheduled for Monday in Ottawa.