The former head of the agency that oversees the George Washington Bridge won't turn over any additional documents to a New Jersey legislative panel investigating the lane closures that sparked a political scandal for Gov. Chris Christie.

Attorneys for former Port Authority of New York and New Jersey Chairman David Samson cited their client's Fifth Amendment right against self-incrimination and right of privacy in a letter to the investigating committee Friday. They say Samson did nothing wrong and broke no laws.

Samson resigned amid the scandal that also led to the firing of a high-level Christie aide who sent another port authority official a message about it being "time for some traffic problems."

That aide, former deputy chief of staff Bridget Anne Kelly, and former Christie campaign manager Bill Stepien have also refused to comply with the panel's subpoenas.