A federal grand jury wants to hear former New Orleans Mayor Ray Nagin's side of the story.  It's the latest in federal prosecutors' probe of corruption at city hall during the Nagin administration.

Greg Meffert, who modernized the city's website and other information technology, pleaded guilty to accepting bribes and kickbacks from Mark St. Pierre, a city contractor.  Nagin went on lavish tropical vacations with Meffert which the former mayor says he thought was paid for by his employee, but Meffert says that money actually came from St. Pierre.

In June, another former city supplier, Frank Fradella, pleaded guilty to bribing an unnamed New Orleans official $50,000 and giving that official free granite for the official's family's business.  Nagin's sons owned a granite countertop installation company.

Nagin could exercise his 5th Amendment rights and refuse to testify.