The vice chair of the National Transportation Safety Board has been abruptly removed from his position, the White House confirmed Tuesday, a rare move that comes as the agency investigates more than 1,000 cases.

A former Jacksonville mayor has been removed from his position at the National Transportation and Safety Board.

The Trump administration Tuesday abruptly removed Alvin Brown from his role as vice chair of the National Transportation Safety Board, a move that comes at a time when the independent agency is involved in several high-profile investigations,