India, Oct. 5 -- Authorities on Sunday suspended the search off the Massachusetts coast for six people on an air ambulance that disappeared during a flight from Bermuda to Boston.

The US Coast Guard said authorities searched more than 4,400 miles (7,081 kilometers) over a span of 66 hours for the four Canadians and two people from Bermuda who were on board.

"Suspending a search is not an easy decision," Rear Adm. Matthew Lake, commander of the Coast Guard's northeast district, said in a statement. "We express our deepest condolences to the families and loved ones affected by the tragedy and our gratitude for our partner agencies who helped support search efforts."

The Federal Aviation Administration contacted the Coast Guard at 2 a.m. ...