In January 2015, it was reported in the British media that the National Security Agency had intercepted communications between Russian government agents in Moscow and those who carried out what was called a "state execution" in London: the recorded conversations allegedly proved that the Russian government was involved in Litvinenko's murder, and suggested that the motive was Litvinenko's revelations about Vladimir Putin's links with the criminal underworld. On 21 January 2016, the Home Office published "The Litvinenko Inquiry: Report" into Litvinenko's death.