Counter-terror unit head Assistant Chief Constable Marcus Beale, who has already been fined £3,500 for compromising national security, was found guilty of gross misconduct by a West Midlands Police disciplinary panel yesterday.
Panel chairman Corinna Ferguson said: “We have decided to recommend dismissal as the appropriate outcome.”
Mr Beale’s future now lies with his Chief Constable David Thompson who will make a decision in the next few weeks.
The panel heard Mr Beale left the documents in a locked case in the boot of his car for four or five days in May 2016, during which he went shopping, visited a pub and left the car at a station on a long weekend.
Mr Beale, 54, who is due to retire in April, said he believed the briefcase and documents were stolen while the car was on his driveway.
He suspects a crook using an electronic device to bypass the central locking and snatch the briefcase.
It has never been found.