[caption id="attachment_153382" align="alignright" width="181"] Boris Nemtsov was one of Russia's leading economic reformers in the 1990s (file photo from 2009)[/caption]

Investigators looking into Boris Nemtsov’s assassination are considering a number of suspects, according to the head of Russia’s Federal Security Service (FSB), Aleksandr Bortnikov.

“We always have [suspects],” Bortnikov told journalists at a briefing on Wednesday.

By RT