In a 15-page document, FIA quoted e-mail exchanges it said proved that McLaren driver Alonso and test driver Pedro de la Rosa were in unauthorized possession of secret technical information belonging to F1 rival Ferrari.

The e-mails were instrumental in Thursday's decision by the World Motor Sports Council to hit McLaren with a record $100 million fine and expulsion from this year's constructors' championship.

The F1 case broke in July when a 780-page technical dossier on Ferrari cars was found at the home of Coughlan, who was later suspended. Ferrari mechanic Nigel Stepney, who allegedly supplied the documents, was fired.

"The e-mails show unequivocally that both Mr. Alonso and Mr. de la Rosa received confidential Ferrari information via Coughlan; that both drivers knew that this information was confidential Ferrari information and that both knew that the information was being received by Coughlan from Stepney," FIA said Friday.

FIA said Thursday it did not penalize McLaren's drivers because they provided evidence in exchange for immunity. Alonso is second in the current drivers' standings, three points behind rookie Lewis Hamilton with four races left, starting with Sunday's Belgian Grand Prix.

McLaren chief Ron Dennis claimed Thursday the evidence given by his drivers, engineers and staff clearly demonstrated that his team did not use any leaked information to gain a competitive advantage.

"The evidence today was primarily e-mail traffic between our drivers, and in one instance, Mike Coughlan," Dennis said. "These were a few e-mails and the drivers have stated categorically that no information was passed to the team, and of course, the team had no knowledge of this e-mail traffic at any stage."

FIA said Friday that the latest evidence made clear that "the information has been disseminated, at least to some degree (e.g. to Mr. de la Rosa and Mr. Alonso), within the McLaren team, and included secret information regarding Ferrari's sporting strategy."

FIA said de la Rosa sought and obtained "secret Ferrari information from a source which he knew to be illegitimate," before sharing it with Alonso.

"There was a clear intention on the part of a number of McLaren personnel to use some of the Ferrari confidential information in its own testing," it said.

On the eve of testing the McLaren car in a simulator, De la Rosa wrote an e-mail to Coughlan on March 21 to provide information about the red Ferrari setup.

"Hi Mike, do you know the Red Car's Weight Distribution? It would be important for us to know so that we could try it in the simulator. Thanks in advance, Pedro," FIA quoted De la Rosa's message.

In another e-mail quoted by FIA, de la Rosa wrote to Alonso about a specific gas Ferrari was using to inflate its tires.

"We'll have to try it, it's easy," wrote de la Rosa.