The three men, who deny assaulting the police, say they are afraid the summonses will mean their arrest.
Chea Mony said Monday he wants a government investigation into the fainting spells of thousands of workers this year.
Venerable Chan Horn told “Hello VOA” recently that he believes pagodas are still at the heart of Cambodian-American communities.
Hun Sen on Friday sharply criticized Voice of America and Radio Free Asia, saying their news reports are "very inferior."
The Documentation Center of Cambodia has distributed more than 400,000 copies to high schools across the country.
Former leaders Noun Chea, Khieu Samphan, Ieng Sary and Ieng Thirith have all denied atrocity charges.
Thet Sambath spent more than a decade in extensive interviews with Nuon Chea before his arrest and detention at the UN-backed tribunal.
In 2010, the government interceded in 160 cases of human trafficking, smuggling or labor exploitation, according to official figures.
The Khmer Rouge Tribunal is caught up in a spat between its investigating judges and international prosecutor over case 003.
About 60 percent of government employees earn between $65 and $100 per month.
Cambodia is preparing to host a youth summit for the regional body in 2012.
Under the Khmer Rouge, Muslims were forced to break major tenets of their religion, including eating pork and frequent prayer.
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