WEST PALM BEACH, Fla. — A Learjet that slammed into a Florida roadway on Sunday, killing all nine people aboard, may have been breaking up before it hit the ground, the National Transportation Safety Board said on Monday.

"We do have some indication that the aircraft was breaking up before impact, and so some of this is yet to be determined. We may find parts of the aircraft some distance away from the actual impact site," NTSB board member Tom Chapman said at a news conference in West Palm Beach, Florida.

U.S. Transportation Secretary Sean Duffy posted on X on Sunday that the Learjet 60 crashed in Palm Beach County at 12:50 p.m. and called it a “horrific tragedy.” The aircraft had departed Austin-Bergstrom International Airport in Texas and was headed to the Bahamas, according to the Federal Aviation Administration.