A lawyer of jailed former oil magnate Mikhail Khodorkovsky was attacked near her Moscow flat on Friday evening, another lawyer said on Tuesday.
The unidentified assailants stole important documents for an appeal hearing of the Khodorkovsky case, including Khodorkovsky's speech.
"We demand investigations into attacks on any lawyers, regardless of the motives," lawyer Karina Moskalenko said.
The hearing at the Moscow City Court was originally scheduled for Tuesday, but was delayed until May 24 to allow the court to study complaints over the case.
Already in detention since 2003, Khodorkovsky and his business partner Platon Lebedev were sentenced to a further six years in prison for embezzlement and money-laundering in a widely condemned trial in December.
In February, an aide to Judge Viktor Danilkin, who sentenced the two men at their second trial, said he was acting under orders from the Moscow City Court. Danilkin denied the accusation.
MOSCOW, May 17 (RIA Novosti)