A report summarizing a yearlong investigation by the legislative panel examining the George Washington Bridge lane closures found no evidence of Governor Christie’s involvement but concluded that two of his allies acted “with perceived impunity” when they gridlocked Fort Lee’s streets apparently for political reasons.

The committee’s 136-page report, drawing off sworn testimony, private interviews and thousands of subpoenaed documents, also highlights the unsuccessful efforts by a now-shuttered arm of Christie’s office to court the Fort Lee mayor’s endorsement, finding that the closures were “motivated in part by political considerations.”

The report states there is “no conclusive evidence” as to whether the governor “was or was not” aware of the lane closures or involved in directing them. But it catalogs several unanswered questions surrounding the scandal and cites a lack of cooperation from several key players who invoked their Fifth Amendment protections against self-incrimination.