The statement added the three-times former world champion and hisson had also attempted to "blackmail the team" into allowing Piquet Jr to continue to drive until the end of the 2009 season.
Abdulmutallab's information about hisson was forwarded to the National Counter-Terrorism Center, and Abdulmutallab was added to a general watch list, a senior administration official said.
Mr Porter said he and his wife Beverly were "holding things together" as a family and added they had not spoken to their son since Monday who was "as good as can be expected".