WEST PALM BEACH, Fla. (AP) - A Palm Beach County commissioner has resigned after being charged with extortion, perjury and violating public open meetings laws.

 Jeff Koons was booked into jail early Tuesday morning and later released on his own recognizance.

 A state grand jury has taken testimony on the commissioner's advocacy for the South Cove project, which will create a boardwalk and manmade mangrove islands. Some nearby condo residents have opposed the project, saying it will ruin their view and cause traffic.

 Koons' attorney read a statement from Koons Tuesday, acknowledging that he made mistakes but insisting that never benefited financially from the project.

 A spokesman for the governor's office says Koons' seat will probably remain empty until the November election.