BANGKOK - Five Thai soldiers were wounded, one seriously, in a fresh clash on Monday night with Cambodian soldiers along the border, just hours after the United Nations appealed for a permanent ceasefire in the disputed area, a Thai army commander said on Tuesday.

The Bangkok Post quoted Lieutenant General Tawatchai Samutsakhon, commander of Thailand's Second Army, which is deployed in the Thai-Cambodian border area, as saying Cambodian troops launched an attack on the Thai base in Phu Ma Khua near the contested territory.

Both Thailand and Cambodia claimed vindication on Tuesday after the UN called for restraint, showing no sign of bridging differences over how to end the rift.