Former McLaren team boss Ron Dennis is expected to announce today that he is stepping back from his involvement with the Formula 1 squad he ran from 1980 to 2008.
Dennis handed the team principal role to Martin Whitmarsh at the start of this season, but stayed on as chairman of the McLaren Group and was present in the garage at the Australian Grand Prix.
McLaren's road car division has scheduled a press conference at its Woking headquarters today in which Dennis is set to reveal that he will cut ties with the F1 team to concentrate on McLaren Automotive.
The move comes with McLaren still embroiled in the fallout from Lewis Hamilton and the team's ex-sporting director Dave Ryan misleading race stewards in Australia and Malaysia.
Ryan has lost his job over the affair, and McLaren is set to appear before the FIA's World Motor Sport Council on 29 April to answer charges of bringing the sport into disrepute.
This hearing could lead to further sanctions against McLaren less than two years after it was hit with a record fine and stripped of all its constructors' points for the espionage scandal in which it was found to possess leaked Ferrari technical secrets.
British newspaper reports have suggested that Hamilton's father and manager Anthony remains furious with McLaren over the latest saga and has exerted pressure on Dennis to end his remaining involvement with the F1 team.