Greg Meffert: Former New Orleans Mayor Ray Nagin's former neighbor and chief technology officer from May 2002 to July 2006.

A self-proclaimed 'deputy mayor' and crime-fighter who presented himself as a 'rich guy' with yacht, who supplied vacations for Nagin, but was actually in dire financial straits and got gifts financed by technology office vendor Mark St. Pierre.

Meffert used St. Pierre's credit card to pay for Nagin's Hawaii and Jamaica vacations.

He pleaded guilty in 2010 to taking $860,000 in kickbacks from St. Pierre in exchange for getting St. Pierre millions in no-bid City Hall work. Sentencing delayed.

Mark St. Pierre: An old friend of Greg Meffert's who worked for Meffert's private tech firm.

Owned Imagine Software and Veracent, companies with subcontracts to run Nagin's tech office for Meffert and Anthony Jones. Also got deal to provide city crime cameras.

Formed NetMethods in 2004, used it to pay off Meffert. Provided credit card to Meffert that he used to give gifts to Nagin. Convicted in 2011 on 53 felony counts. He was sentenced to 17 years in prison.

Rodney Williams: Former president of Three Fold Consultants, which got several post-Katrina reconstruction subcontracts.

Williams allegedly bribed Nagin in early 2008 to get contract Three Fold was not qualified for and documents purporting ownership in Nagin's countertop business. Nagin used a closed-door process to award more than $3 million in construction management work to Three Fold.

Williams was charged in a bill of information and pleaded guilty Dec. 5, 2012, to paying Nagin and his sons $72,250 in bribes and kickbacks.

Frank Fradella: Owner of now-defunct Home Solutions of America.

Fradella met Nagin in Las Vegas after his subsidiary provided private jet for mayor's trip. Quickly reeled in city work at airport, French Market, French Quarter.

Held several secret meetings with Nagin on Market Street power plant and Nagin's countertop company. Pleaded guilty in 2012 to sending free truckloads of granite to an official known to be Nagin, funneling him $50,000 in June 2008 and paying him $10,000 a month for consulting fees in 2010-11. Awaits sentencing.

Aaron Bennett: Founder of Benetech, which got post-Katrina contracts making emergency placards, clearing flooded cars; then got bigger deals in St. Bernard, Plaquemines.

Sold business to Frank Fradella, then arranged for Nagin's trip to Chicago, Vegas so mayor could meet Fradella. Claims he proposed getting Nagin's countertop business deal with Home Depot.

Pleaded guilty in 2011 to bribing Plaquemines sheriff for other big contract. Sentencing delayed.

Anthony Jones: He was wired by Greg Meffert to run Management Information Systems in city tech office.

He was suspended in 2009 for lying about his college degree, and he pleaded guilty in 2010 to taking $20,000 in bribes from St. Pierre in 2006 and 2007 to speed up payments for St. Pierre's firms. He testified against St. Pierre and has his sentencing delayed.

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