I just received an unsolicited letter from a guy in a federal prison. I would like to reply to his letter but cannot find any information on his crime, when he went in... The federal bureau of prisons inmate locator only returns his name, register number, age, race, sex, release date, and location.

Google is your friend.

Inmate Name + arrested - for example.

Have you found what you were looking for ? I found a lot by googling.

No, I did not find anything. I am not looking for details. I just want some very general information. It really does not matter. I doubt he is in for murder or childe rape since he will be out by his 32 birthday. I wrote him and asked him what he was in for because I normally research that before writing someone. I just hope he is not offended.