MOSCOW (AP) — Russian prosecutors say Britain's accusations over the poisoning of an ex-spy in England are in keeping with its behavior in previous high-profile cases.

Britain has blamed Russia for the March 4 poisoning of former double agent Sergei Skripal and his daughter. Russia fiercely denies the allegations.

Deputy Prosecutor General Saak Karapetian said Monday that the British government's refusal to share evidence echoes the 2006 death in London of ex-KGB officer Alexander Litvinenko, who was poisoned with radioactive polonium.

Russia rejected the verdict of a British inquiry that Russian security services killed Litvinenko and accused Britain of manipulating evidence.

Karapetian also cited the death inquiry for Russian tycoon Boris Berezovsky. Berezovsky died in Britain in 2013, and a coroner concluded it was impossible to say whether it was suicide or a slaying.