Most of the strikers were women and many of the arrests were conducted in “a violent way”, the experts added. The arrests appeared to contravene the right to freedom of association, assembly and expression.
“We also strongly condemn the manner in which the first arrests took place, after dark, on a day where multiple other events diverted public attention”, the experts said.
For them, this could be seen as “an underhanded way to clamp down on fundamental human rights and impinge on the free exercise of the rights to freedom of peaceful assembly and of association.”
The experts called on the Government to explain the response by the police, and said they were following developments closely.
Nine people, including seven women and two men, have so far been charged with “incitement to commit a felony” under Articles 494 and 495 of the Cambodian Penal Code. They all remain in custody, while others have been released.
According to the experts, these same provisions have previously been used to prosecute human rights defenders in the country.
The first round of arrests took place at around 8pm on 31 December. Continued strikes resulted in a further 17 arrests, on 3 January.
The three most senior union leaders, including president Chhim Sithar, were separately arrested on 4 January, on their way to join the ongoing strikes.
Video footage of arrests shows police using what appears to be excessive force during the arrests.