(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

What are the answers to this following set of questions:

1. Who is the mayor?
2. What party is he from?
3. How old is he?
4. Who is the deputy mayor?
5. Is still the mayor?
6. Is Paul still the deputy mayor?
7. Why not?
8. For what?
9. Who is the Mayor's sibling
10. Who is Joseph Giorgianni?
11. Who is the FBI's representative?
12. Over how many days did the raids take place?
13. What was raided Wednesday?
14. What about Thursday?
15. When did the Mayor take office?
16. What sort of attacks have been made against him?
17. Anything else?
18. What did he have to say about the raids on his brother?
1. Tony Mack
2. Democrat
3. 46
4. Paul Sigmund IV
5. unknown
6. no
7. he was arrested
8. heroin possession
9. Ralphiel Mack
10. convicted sex offender.
11. Barbara Woodruff.
12. Two
13. Ralphiel Mack, and Joseph Giorgianni,
14. City Hall
15. July 2010
16. questions over public finance
17. yes
18. unknown