Tallinn, Estonia ? A helicopter carrying 14 people, including two Americans, crashed in the Baltic Sea off the Estonian coast on Wednesday and all aboard were believed killed.

The U.S.-made Sikorsky S-76 helicopter, operated by Finnish firm Copterline, was on a commercial flight from the Estonian capital, Tallinn, to Helsinki, Finland, when it went down in strong winds shortly after takeoff, about three miles off the coast, officials said.

Pictures from an unmanned underwater robot sent to the wreckage on the seabed, some 160 feet underwater, showed that bodies were trapped inside, rescue spokesman Aivar Murikse said without giving a number.

“It seems like everybody is inside,” Murikse said. He said the hull was nearly intact, but the front windows were shattered and the cabin was filled with water. “Probably they died at the impact moment,” he added.

Divers will try to recover the bodies today.