Two suspects still wanted in connection with murder of Russian dissident Alexander Litvinenko
A counter-terror officer working on the investigation into the death of Russian dissident Alexander Litvinenko has told an inquiry the two main suspects are still wanted for his murder.
Detective Inspector Craig Mascall, who works for Scotland Yard's counter-terror command, has been working on the probe into Mr Litvinenko's poisoning since two days before his death on November 23 2006.
Mr Litvinenko, 43, a former Russian spy who is thought to have been working for British secret service MI6 during his time in the UK, died at University College Hospital nearly three weeks after he had consumed tea laced with polonium on November 1 at the Millennium Hotel in London's Grosvenor Square.
Two men - former KGB bodyguard turned politician Andrei Lugovoi and Dmitri Kovtun - were named as the main suspects in 2007. Both deny any involvement and remain in Russia.
Mr Mascall told the public inquiry into Mr Litvinenko's death: "It's still an on going criminal investigation. There are still two people wanted for the murder of Mr Litvinenko and that's Mr Lugovoi and Mr Kovtun."
The detective inspector told the inquiry that at its peak there were 100 detectives and 100 uniformed officers working on the investigation.