His son had recently been promoted within the Cambodia National Rescue Party.
Officials pledge an investigation and nationwide inspections of garment plants.
The party still demands Sam Rainsy be allowed to contest despite dropping him from their list.
Five out of eight parties are approved to field candidates in July polls.
Cambodia’s opposition head says his party is in talks for his return.
They say a delay in candidates' list is meant to push for electoral reform.
Sam Rainsy says irregularities with voter lists and ballot monitoring must be fixed.
But he will not intervene in jailed land activist Yorm Bopha’s case, his spokesman says.
Cambodia's ruling party puts 14 of its progeny up for contest in upcoming national polls.
But Chea Vichea's brother is still calling for justice in the trade unionist's assassination.
Watchdog groups will seek global support if the demands are ignored.
A Freedom House poll shows slight improvement in scores by mainland China and North Korea.
The factory employees demand better pay and improved benefits.
A judge says additional evidence must be considered before he can issue a verdict.
One year after his death, they say authorities tried to cover up his slaying.
The WHO launches a new strategy in Southeast Asia to combat resistance to a key drug.
Party calls off march after reform proposal accepted for study.