(CNN) - New Jersey Gov. Jon Corzine's campaign is staying on the attack, releasing a fresh negative ad that charges Republican rival Chris Christie has "one set of rules for himself, another for everyone else."
"While he was U.S. Attorney, Republican Chris Christie gave one of his subordinates a $46,000 loan. And even though it is required under federal and state laws, Christie never reported the loan. And never paid taxes on the interest he received," says the narrator in the 30-second spot.
"When he was caught, Christie said it was a 'mistake.' But he prosecuted people who did the same things. Chris Christie. One set of rules for himself. Another for everyone else."
Christie has denied any impropriety, calling the omission an inadvertent oversight, and telling reporters he plans to update his taxes and all other relevant filings.
It isn't a new line of attack. Last week, a Corzine spokeswoman called Christie "a complete menace to society on the highways of New Jersey" after the state's Motor Vehicle Commission released documents revealing he had racked up 13 moving violations over the last two and a half decades. He was also ticketed for six traffic accidents between 1989 and 2007, the Motor Vehicle Commission confirmed to CNN.
"Every day it becomes more evident that Christie has always had one set of rules for himself and another for everyone else," Corzine spokeswoman Lis Smith said Friday.
Christie's driving history came under scrutiny last week after a New Jersey radio station reported that he was ticketed in 2005 for speeding and driving an unregistered vehicle. Christie, still a U.S. attorney at the time, was allowed to drive away from the traffic stop. His campaign acknowledged that Christie's job title came up while he was pulled over.
News of the traffic stop also raised eyebrows because Christie was in the car with his now-former aide Michele Brown, the recipient of the controversial $46,000 loan. The campaign said Christie's wife and family were also in the car during that traffic stop.