The Justice Department is preparing to seek an indictment against former Cuban President Raúl Castro, three people familiar with the matter tell The Associated Press.

The United States is moving to indict former Cuba President Raúl Castro on potential charges in a 30-year-old case involving the downing of two humanitarian planes.

The timing of the potential indictment, which would need to be approved by a grand jury, was not immediately clear, but the official said it sounds imminent.