Can someone tell me about the ending of American Gangster?

I was watching a bootleg version of it online. I think I got up to near the end. The last thing I saw was Frank and his wife going into church, while that is going on Richie gets a search warrant and him and some other police go into the project building. They go up to the top floor and they are about to make a move into the room... then im gonna need a brieft summarry of what happens next. thanks