(CNN) -- New Jersey Gov. Chris Christie's reelection campaign and the New Jersey Republican State Committee have been subpoenaed for documents by federal prosecutors investigating the George Washington Bridge traffic controversy, a law firm representing those groups said in a statement on Thursday.
The political groups also have received subpoenas from a special state legislative committee also investigating the matter that has rocked Christie's administration.
"The campaign and the state party intend to cooperate with the U.S. Attorney's office and the state legislative committee and will respond to the subpoenas accordingly," Mark Sheridan of Patton Boggs said in a statement.
Rebekah Carmichael, a spokeswoman for the U.S. Attorney's office in New Jersey, said that "we can neither confirm nor deny any specific investigative actions."