(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. 

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Who is the mayor?
What party is he from?
How old is he?
Who is the deputy mayor?
Is still the mayor?
Is Paul still the deputy mayor?
Why not?
For what?
Who is the Mayor's sibling
Who is Joseph Giorgianni?
Who is the FBI's representative?
Over how many days did the raids take place?
What was raided Wednesday?
What about Thursday?
When did the Mayor take office?
What sort of attacks have been made against him?
Anything else?
What did he have to say about the raids on his brother?
Tony Mack
Mayor Tony Mack
Democrat
Mack, a Democrat
46
Mayor Tony Mack, 46
Paul Sigmund IV
eputy mayor, Paul Sigmund IV
unknown
unknown
no
which led to his prompt resignation. 
he was arrested
was arrested and charged with heroin possession and assaulting a police officer
heroin possession
arrested and charged with heroin possession
Ralphiel Mack
Mack's brother, businessman Ralphiel Mack
convicted sex offender.
Joseph Giorgianni, a convicted sex offender. 
Barbara Woodruff.
FBI spokeswoman Barbara Woodruff. 
Two
one day 
Ralphiel Mack, and Joseph Giorgianni,
ednesday's raids also included the homes of Mack's brother, businessman Ralphiel Mack, and Joseph Giorgianni, a convicted sex offender. 
City Hall
raided City Hall in New Jersey's capital on Thursday
July 2010
 began his term in July 2010
questions over public finance
has been beleaguered by questions over public finance and accusations of cronyism. 
yes
 questions over public finance and accusations of cronyism. 
unknown
unknown