NEWARK - (AP) - Opening arguments have begun in the trial of a former northern New Jersey mayor swept up in a massive 2009 federal sting.

Federal prosecutors accused former Secaucus Mayor Dennis Elwell of accepting $10,000 through a middleman from a crooked developer.

Assistant U.S. Attorney Maureen Nakly told a jury Elwell knew it was a bribe.

The developer was actually government cooperating witness Solomon Dwek. He agreed to wear a wire after being arrested for bank fraud.

Dwek was expected to testify Monday but prosecutors say he's been arrested in Maryland for failure to return a rental car.

Instead, the government plans to call former political adviserRonald Manzo as the first witness.

Manzo pleaded guilty in May to acting as a middleman betweenElwell and Dwek.