The request was made to Prime Minister Hun Sen by lawyers for civil party participants at the tribunal.
In an interview with VOA Khmer, Poch Yuon Ly’s daughter, Poch Piseth Neary, called the diary, “the only valuable asset my father left me.”
In recent weeks, Kem Sokha has been accused of claims that atrocities at the prison were staged by Vietnamese forces after they ousted the Khmer Rouge from power.
Hun Sen said in a public speech Thursday the demonstrations calling for an apology for his alleged remarks should be postponed until after the election.
Pressure continues for a senior opposition party official to apologize for alleged remarks that has upset victims of the Khmer Rouge.
Thousands of government supporters protest in Cambodia against comments allegedly made by opposition leader about atrocities during the Killing Fields era. VOA Khmer's Heng Reaksmey reports from Phnom Penh.
The law was passed by all 86 lawmakers in attendance, from the ruling Cambodian People’s Party and the royalist Funcinpec.
More than 12,000 people were tortured and sent to their executions at the center overseen by Duch, who was found guilty for his crimes by the UN-backed tribunal in February 2012.
“Red Wedding” highlights the struggles of Cambodian women forced to marry strangers under the strict policies of the Khmer Rouge.
The “Law on the Denial of Crimes Committed During the Period of Democratic Kampuchea,” which uses the official name for the Khmer Rouge, is set for National Assembly debate Friday.
Chhim Sotheara’s testimony comes amid participation in court proceedings by a number of victims of the Khmer Rouge, who filed complaints as civil parties.
Chhum Mey, who was one of only a handful of survivors at Tuol Sleng, told reporters Tuesday he would give Kem Sokha 10 days to apologize for his reported remarks.