British investigators say Lugovoy, Kovtun responsible for ex-FSB officer Litvinenko death

Investigators have held Dmitry Kovtun and Andrei Lugovoy responsible for the death of former FSB (Russia's Federal Security Service) officer Alexander Litvinenko, this is the essence of the final report published on Thursday following the public inquiry.

Court investigator Robert Owen wrote in his report that he is sure that Mr. Lugovoy and Mr. Kovtun were acting jointly when they poisoned A. Litvinenko.

However, it is noted that they "were acting on behalf of others".

The operation to kill Litvinenko was probably approved by the Russian leadership, according to the report.

The document, extracts from which are published by British media, says that numerous intelligence data have been collected to witness that "the FSB operation to kill Mr. Litvinenko was probably approved by Mr. Patrushev [FSB head back in 2006] and also by President Putin".