The cops are onto something here. BTW, what's your real name and address? Some people might want to talk to you about why you jumped into this particular thread so quickly with a transparant attempt to discredit the police investigative theory.
If you call the local FBI office, they'll have an investigator in charge all evening, so if you have some information to impart to them, you might give them a call.
Here's another story....
Why the cousins, though? Why not someone closer? Perhaps because there was no one closer, but it seems unlikely.
I wonder if killing the family of the intepreter might also have an effect on the trial. I don't know if it's before a jury or not, but if it is and they become aware of the connection, I suppose it might be considered prejudicial to the defendants (Lynne Stewart and her interpreter for working with the sheik, a man named Mohammed Khoury).