The lawyer for slain Kremlin critic Boris Nemtsov's family on Thursday insisted those who ordered the killing had not been brought to justice after five men were found guilty of carrying out his murder.

"We cannot say that we are pleased with the verdict," said lawyer Vadim Prokhorov. "In two years... they could not find the organiser and mastermind of the murder in the most prominent political murder of the 21st century. It's a complete fiasco."