Interpol joins investigation into Litvineko poisoning

Interpol has joined the investigation into the killing of former Russian agent Alexander Litvinenko, the Interfax news agency reported today.

The investigation so far has pulled in witnesses in three countries: Britain, where Litvinenko fell sick and died after being poisoned with polonium-210, Russia and Germany. Some of the men who met with Litvinenko before he fell ill travelled from Moscow and Hamburg to London.