A Russian investigative journalist, Ivan Golunov has been arrested in the capital Moscow and charged with trying to illegally sell drugs.
He was taken to hospital, police sources say, after saying he was ill while unofficial reports suggest he was injured while being detained.
The reporter for Latvia-based news site Meduza was arrested on Thursday.
His lawyer says drugs were planted on him, an accusation the Russian authorities deny.
Meduza says Mr Golunov, 36, is being “being persecuted because of his journalistic activity”.
About his arrest
He was on his way to meet another journalist on Thursday when he was stopped and searched by officers.
They say they found the synthetic drug mephedrone in his rucksack and that a later search of his flat turned up more drugs and some scales, indicating that he was involved in dealing.
The journalist was officially charged on Saturday morning with attempting illegally to produce, sell or pass on drugs.
Reports say Police released photos which they said showed drug paraphernalia in Mr Golunov’s flat, but these were later withdrawn.