Ontario's air ambulance service has confirmed four of its staff are dead after one of its helicopters crashed near Moosonee, Ont. early Friday morning.
The Ornge air ambulance service is expressing "deep regret" in its statement that no one survived the accident.
Ornge says two pilots and two paramedics were on board the aircraft, but no patients.
It says the family members of those who were on board have been notified.
The air ambulance service says the Sikorsky S76 helicopter left its base in Moosonee en route to Attawapiskat at about midnight and contact was lost with the aircraft shortly after takeoff.
Christian Cafiti, a spokesman at the Joint Rescue Co-ordination Centre at CFB Trenton says the helicopter crash site near Moosonee was located this morning and confirms there were no survivors.
The Transportation Safety Board has been notified and will be investigating.
"Everybody at Ornge is deeply saddened by this tragic incident, and our hearts go out to the families and friends of those who lost their lives,: Dr. Andrew McCallum, president and CEO of Ornge, said in the statement this morning.
"We will do whatever we can to support them at this difficult time. We will also co-operate fully with the authorities charged with investigating the accident."
He said further details will be made available at a media conference to be held later today.