Canadian investigators say they believe there are 10 to 13 bodies in the wreckage of a helicopter that crashed in the freezing Atlantic off the coast of Newfoundland.

Lead investigator Mike Cunningham said Sunday that one more body has been recovered from the wreckage.

The Sikorsky S-92 was carrying 18 workers to oil platforms on Thursday when it reported mechanical problems and ditched into the sea about 30 miles from shore.

Officials rescued one man who remains in a St. John's hospital in stable but critical condition.

The Transportation Safety Board used a remote controlled camera to search the wreckage this weekend. Officials will try to raise the helicopter.