A lawyer for Russian opponent Alexeï Navalny, who last week accompanied the latter's mother in her fight for the authorities to hand over his body, was briefly detained on Tuesday in Moscow, Russian media announced.
The lawyer, Vasily Dubkov, later told independent news outlet Verstka that he had been released.
Verstka said he would not comment on the reason for his detention, but that it was an obstruction of his work as a lawyer.
“Extremist group”
With Dubkov's help, Navalny's mother Lyudmila managed to secure the release of her son's body last Saturday, eight days after his sudden death in an Arctic penal colony.
She had previously accused investigators of trying to
"blackmail"
her by withholding the body unless she agreed to bury it without a public funeral, which she refused.
President Vladimir Putin's spokesman called the allegation absurd and said the Kremlin was not involved in organizing Navalny's funeral.
Navalny, 47, was serving a sentence of more than 30 years for fraud and extremism, charges he said were trumped up to silence him.
The Kremlin angrily rejected accusations from Navalny's family and supporters that Putin had him murdered.
Three of Navalny's lawyers were arrested last October on suspicion of belonging to an
"extremist group"
, and two others were placed on a wanted list.