The five current or former staff members of the group ADHOC are held for allegedly bribing a woman to change testimony that was damaging to then-deputy opposition leader Kem Sokha, who was accused of acting illegally in connection with an alleged extra-marital affair.
The related cases are generally seen as moves by Prime Minister Hun Sen's government to weaken its political opponents.
A statement released yesterday by the US State Department noted the delay in holding a trial and how it stressed the detainees' families. It urged Cambodia to adhere to its obligations under international human rights statutes.
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