According to media reports, the journalist was arrested on 4th October 2016, two days after his article had appeared in Alternative Turkmenistan News about state-sponsored child and forced labour programme during cotton harvests in the country.
He was charged with fraud and handed a three years jail term, but his trial was widely condemned as falling short of international standards amid reports that his confessions were made under torture in one of the world's most authoritarian regimes.
Recent reports also indicate that the journalist is suffering from health problems due to poor living conditions in the labour camp where he is imprisoned.
The International Labor Rights Forum has drafted a petition calling on the immediate release of Gaspar Matalaev.
IFJ General Secretary Anthony Bellanger said: “Journalists documenting forced and child labour in Turkmenistan are doing an extremely important although dangerous job in raising awareness about a dramatic issue. They must be allowed to work freely. We urge the authorities to release Gaspar Matalaev immediately.”