The government has established an investigative committee, and two men have been detained for questioning in the April 26 shooting.
Wutty's death provoked outrage from rights groups, who claim the government frequently turns a blind eye to illegal logging.
Prime Minister Hun Sen said Tuesday a joint government committee will investigate the shooting.
Shots were fired after a lengthy argument between Chut Wutty and the officials, who appeared to be military policemen.
A military police spokesman told local media that officers shot at Wutty, and that one military police officer was killed in the exchang
The men were charged under the new penal code and will face an investigation.
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Police said the assault occurred when one of the purported victims and a security guard attempted to retrieve a necklace from the room.
The World Bank is holding an annual meeting and the ABD is currently reviewing its policies on projects.
Hang Vuthy has already been given some 51 years of jail time for involvement in at least four serious crimes.
The World Bank subsequently froze its funding to Cambodia, pending more results in curbing land grabs.
The filmmakers will receive the award May 21 in New York.