Ferrari team bosses have been summoned to see the German Grand Prix stewards following the team orders controversy at Hockenheim.
Fernando Alonso won the race from team-mate Felipe Massa, but only after the Brazilian let him pass following a conversation on the radio, Massa having led the race from the start.
Massa was told by his race engineer Rob Smedley: "Fernando is faster than you. Can you confirm you understood that message?"
Moments later Massa slowed down and let Alonso take the lead.
After the race, the FIA stewards summoned Ferrari's team manager and team principal.
Team orders are banned in the sport.