*The FBI is preparing to file new corruption charges against former Detroit Mayor Kwame Kilpatrick and his father based on evidence the two took hundreds of thousands of dollars in bribes from Karl Kado, a little-known city contractor.

Kilpatrick resigned from office and pleaded guilty to obstruction of justice charges on Sept. 4, 2008, following an investigation that showed he used city resources to cover up a romantic affair with his chief of staff Christine Beatty. He served 99 days in jail and was ordered to pay restitution of $1 million to the city.

According to the Detroit Free Press, Kado has been cooperating with the FBI for almost five years. He told the feds he paid $100,000 in cash directly to the then-mayor in 2002. He also claims to have paid hundreds of thousands more to Bernard Kilpatrick, the mayor’s father.

Bernard Kilpatrick

Kado is awaiting sentencing for paying bribes to protect multi-million dollar contracts connected to the city’s Cobo Center, which is home of the North American International Auto Show.

Dennis Darnoi, a political operative in Oakland County who runs Densar Consulting, told the Free Press that a number of Oakland County businessmen interested in doing business with the city said they were given Bernard Kilpatrick’s number and told to call it to set up a meeting with the mayor. Bernie Kilpatrick would then allegedly request $10,000 to guarantee a meeting with City Hall.

“It was just kind of how business was done,” Darnoi said.

Nine people have already plead guilty in connection to the long-running federal investigation of the city government and a 10th, political consultant Sam Riddle, recently saw his case end in a mistrial when the lone black jury member refused to discuss the particulars of the case with her fellow jurors.

The Detroit Free Press reported Sunday that the FBI is considering bringing racketeering charges against the Kilpatricks and their accomplices.