The Norodom Ranariddh Party Tuesday urged the government to cancel 10 land agreements with Vietnamese companies, citing worries over illegal immigration and destruction of the environment.
The public call is one in a series of tit-for-tat announcements by Prince Ranariddh's party and Prime Minister Hun Sen, as Cambodia gears up for national elections.
The NRP accused government officials of setting aside 120,000 hectares of land for companies belonging to former Vietnamese military officials in Kampong Cham, Kampong Thom and Kratie provinces.
Minister of Agriculture Chan Sarun and other government spokesmen could not be reached for comment Tuesday.
The immigration of Vietnamese and other groups to Cambodia is often politicized ahead of elections.