Gulfstream Aerospace Corp. confirmed today that a Gulfstream G650 crashed Saturday morning during takeoff-performance tests in Roswell, N.M. Two Gulfstream pilots and two Gulfstream flight-test engineers died in the crash.

"Our thoughts and prayers go out to the families of those who were lost," said Joe Lombardo, president, Gulfstream Aerospace.

The accident is under investigation by Gulfstream, the National Transportation Safety Board and the Federal Aviation Administration.

"We are cooperating 100 percent with the investigation," Lombardo said.