TRENTON, N.J. - Assembly Republicans on Tuesday threatened to file a lawsuit against Gov. Jon S. Corzine's administration for refusing to release a consultant's report on the governor's plan to make more money off state properties such as toll roads.

Assemblymen Kevin O'Toole and Sean Kean and Assemblywoman Jennifer Beck said they have asked for copies of an $800,000 consulting report detailing what would happen if tolls are increased on the New Jersey Turnpike and Garden State Parkway.

The governor is considering increasing highway tolls as part of his plan to try ease state financial woes.

The Republicans said they planned to file a complaint in Superior Court next week alleging violation of the state's open public records law if they don't get the report.

"In the spirit of transparency, you must trust members of the Legislature and the public to review the consultant's final reports and recommendations which we have all paid $800,000 to produce," the lawmakers wrote in a letter to Corzine.

Corzine hasn't released an official plan and hasn't said when he will do so. He has promised public meetings in all 21 New Jersey counties.

Treasury spokesman Mark Perkiss dismissed the Republican threat, arguing state fiscal problems were created by both parties.

"Politically motivated threats concerning decisions that have not been made and proposals that are not yet complete only move New Jersey deeper into political gridlock over how to put the state's fiscal house in order," Perkiss said.