The office site in Texas so late on Saturday a body was found after a two-car vehicle with three passengers crashed into a bay east of Houston earlier. Chambers County Sheriff Brian Hawthorn said at a press conference earlier that "it's probably a crash that no one would be able to survive."
The Federal Aviation Administration (FAA) issued a warning on Boeing 767 after losing radio contact about 30 miles southeast of Houston's George Bush Intercontinental Airport.
Video from CBS affiliate KHOU showed wrecks in the shallow waters of Trinity Bay. There was rain in the area when the flight control lost contact with the plane.
The aircraft, operated by Atlas Air Inc., was led from the Miami International Airport. In a statement, Atlas Air said: "These people and their family members are our top priority at this time."
NTSB (National Transportation Safety Board) said it was sending a team to investigate on stage. Boeing issued a statement on Twitter who said it was aware of crashes and "gathering more information."
Kris Van Cleave contributed to this report.