In Russia, two years after lawyer Sergei Magnitsky died in custody, two prison doctors have been charged with negligence.
The Kremlin’s human rights council has said Magnitsky was possibly beaten to death.
Colleagues say tax evasion and fraud charges which resulted in him being in pre-trial detention had been fabricated by police investigators whom he had accused of stealing $230 million (161 million euros) from the state through fraudulent tax returns. They also say his death was the result of a conspiracy led by the same officers.
The 37-year-old, who worked for equity fund Hermitage Capital spent a year in custody before his death, which spooked overseas investors and tarnished Russia’s image.
The case has also led to tension between Moscow and Washington.
The US State Department has imposed visa restrictions on some Russian officials believed involved in Magnitsky’s death as part of a broader US programme targeting human rights violators.