( CNN ) -- Federal agents raided City Hall in New Jersey 's capital on Thursday , one day after they swarmed the home of the city 's mayor , his brother and a campaign supporter . `` The FBI is executing search warrants at various offices at Trenton City Hall , pursuant to an ongoing investigation , '' said FBI spokeswoman Barbara Woodruff . It was not immediately clear why the raids were conducted and authorities declined to elaborate . Mayor Tony Mack , 46 , responded to the Wednesday raids by saying he had `` not violated the public trust in any way , nor have I violated any of my public duties . '' He could not be immediately reached Thursday for comment . Mack , a Democrat who began his term in July 2010 , has been beleaguered by questions over public finance and accusations of cronyism . Last May , his deputy mayor , Paul Sigmund IV , was arrested and charged with heroin possession and assaulting a police officer , which led to his prompt resignation . Wednesday 's raids also included the homes of Mack 's brother , businessman Ralphiel Mack , and Joseph Giorgianni , a convicted sex offender . More from CNN Justice : . FBI dive team to search for missing Iowa girls . Arrest made in Philadelphia attempted abduction . 'America 's toughest sheriff ' faces civil rights trial . Michael Jackson 's siblings attack estate executors .
Federal agents raided City Hall in Trenton , New Jersey , on Tuesday . They raided the home of the city 's mayor , his brother and a Trump supporter Wednesday . It was not immediately clear why the raids were conducted and authorities declined to comment . Mayor Tony Curran says he has ` ` not violated the public peace in any way ''