TRENTON, N.J. (AP) -- Federal agents arrested the mayor of New Jersey's capital city early Monday as part of an ongoing corruption investigation into bribery allegations related to a parking garage project that was concocted as part of an FBI sting operation. Trenton Mayor Tony Mack, his brother, Ralphiel, and convicted sex offender Joseph Giorgianni, a Mack supporter who owns a Trenton sandwich shop, were accused of conspiring to obstruct, delay and affect interstate commerce by extortion under color of official right.