The veil of secrecy in the assassination of Boris Nemtsov was opened after 7 years!

There has been a very controversial development regarding the assassination of Boris Nemtsov. It has been proven that the Russian agent linked to the secret assassination team followed the murdered Putin opposition politician for months.
An investigation revealed that the opposition politician Boris Nemtsov, who was Assassinated In Russia , was followed by an agent linked to the political assassination team about a year before he was killed.
Nemtsov was one of the most prominent opponents of Russian President Vladimir Putin. His murder in 2015 was the biggest political assassination committed in Russia since Putin took office.
Russian officials deny any involvement in the assassination. Bellingcat, The Insider and the BBC found evidence that agents followed Nemtsov on his 13 trips before he was killed.
Rising in the 1990s, Boris Nemtsov was Deputy