Officials in Belarus say a prominent opposition figure found hanged at his weekend home outside the capital, Minsk, on Friday committed suicide.
Forensic examiners established that, apart from the noose mark on Oleg Bebenin's neck, there were no other injuries, a local prosecutor said.
Mr Bebenin, 36, founded Charter 97, a leading opposition website critical of President Alexander Lukashenko.
Colleagues said they could not believe the father-of-two had killed himself.
They pointed out that he had left no note and Charter 97's editor, Natalia Radina, said he had not been having any family or health problems.
He had, she told independent Moscow radio station Ekho Moskvy, been absorbed in his work and campaigning for opposition presidential hopeful Andrei Sannikov.
Most independent media in Belarus have closed down and the authorities barely tolerate political dissent, correspondents say.