How long will it take for an I-652 decision?

Question Detail: I had my interview today for my citizenship but I didn't get approved right then and there. The officer said she couldn't make a decision. I applied as a resident for 5 or more years. I was married to a US citizen from August 2006 to November 2009 (when divorced was final). My N-400 was received in December, fingerprinting in January and interview today (04/13). Officer said I would have to wait for my letter that I should receive in 4-6 weeks. Do I need to worry? I have paid all my taxes since the day I moved here, no arrests or tickets and I entered a marriage with good intentions not to obtain a green card. 

Answer: USCIS may review your marriage to determine if your marriage was bona fide.  If not it may deny your N-400 and refer you to immigration court for removal.

If your marriage was not for the purpose of evading immigration law, you don't have to worry about it.

If you don't hear from USCIS for more than 120 days after the interview, you should consult with immigration lawyer.