spy vs spy

More information about the Litvinenko poisoning indicates more clues pointing towards Moscow as the source of the radioactive materials used. According to WaPo, there was a press conference held in Germany shedding more light on this puzzle.

Now Moscow is investigating the death in London while the Brits are in Moscow investigating. The Germans have found traces of the polonium 210 in Hamburg. From yesterday's press conference:

German radiation experts said Sunday that they had confirmed the presence of polonium-210, the substance that killed Litvinenko, at two locations in Germany and were 95 percent certain that traces found at other locations had come from that radioactive isotope. Final tests were needed to confirm its presence at some locations, German officials said. Officials did not specify exactly where the polonium-210 had been found.

Since I watch CSI all the time, I am wondering if there is a fingerprint identification to the polonium. Can the traces which have been found be tracked back to the same contamination that Litvinenko died from? So if it is the same element, does it have the same exact composition as what was in Litvinenko's body and can only be made at a particular nuclear plant, say in Russia? Where is Gil Grissom when I need him to answer my questions?