In 1988, Vietnam was estimated to have about 100,000 troops in Kampuchea, but, sensing that a diplomatic settlement was within reach, the Vietnamese Government began withdrawing forces in earnest. Between April and July 1989, 24,000 Vietnamese soldiers returned home. Then, between 21 and 26 September 1989, after suffering 15,000 soldiers killed and another 30,000 wounded during the 10-year occupation, Vietnam's commitment to Kampuchea was officially over, when the remaining 26,000 Vietnamese soldiers were pulled out. However, armed resistance groups opposed to the Vietnamese-installed PRK government claimed that Vietnamese troops were still operating on Kampuchean soil long after September 1989. For example, non-communist groups engaging in land-grab operations in western Kampuchea after the withdrawal reported clashes with elite Vietnamese Special Forces near Tamar Puok along Route 69. Then, in March 1991, Vietnamese units were reported to have re-entered Kampot Province to defeat a Khmer Rouge offensive. Despite such claims, on 23 October 1991, the Vietnamese Government signed the Paris Peace Agreement, which aimed to restore peace in Kampuchea.