TRENTON, N.J. -

New Jersey lawmakers hope testimony from one of Gov. Chris Christie's aides this week gives them insight into the relationship between the Port Authority of New York and New Jersey and the offices of the governors of the two states.

Christie aide Regina Egea is scheduled to appear Thursday before the committee investigating last year's shutdown of lanes near the George Washington Bridge.

Committee co-chairwoman state Sen. Loretta Weinberg says the committee still has unanswered questions about what happened and is trying to assess whether the Port Authority has the appropriate amount of independence from politicians.

Christie is scheduled to be in Iowa attending other political events that day. He has criticized past hearings on the bridge issue as political efforts that have not provided new information.