Newly disclosed communications between a top aide to New Jersey Gov. Chris Christie (R) and Christie appointees at the Port Authority of New York and New Jersey suggest Christie's office used the Port Authority for political retribution against a mayor -- something Christie's office has flatly denied.

Democrats have accused Christie and his Port Authority appointees of closing access lanes from Fort Lee, N.J., to the heavily trafficked George Washington Bridge for several days in September as retribution for Fort Lee Mayor Mark Sokolich not endorsing Christie's 2013 reelection campaign. The closures created severe traffic problems.

Christie has said he didn't believe his office wasn't involved in the closures. But text messages and e-mails show Christie's deputy chief of staff, Bridget Anne Kelly, sent an e-mail to top Port Authority official David Wildstein that said: "Time for some traffic problems in Fort Lee."

Wildstein responded to Kelly's e-mail: "Got it."