Nuon Chea
Following the coup, North Vietnam forces invaded Cambodia in 1970 at the request of Khmer Rouge leader Nuon Chea. Thousands of Vietnamese were killed by Lon Nol's anti-communist forces and their bodies dumped in the Mekong River. Attacks against Vietnamese began after a demand by Lon Nol that all Vietnamese communists leave Cambodia. Phnom Penh's North Vietnamese embassy was ravaged by Cambodians.