Thailand and Cambodia exchanged fire along their disputed border for a second day on Friday, officials from both countries said, with more than a dozen people reported killed and more than 135,000 civilians evacuated.

SEOUL, July 27 (Yonhap) -- South Korea on Sunday raised the travel alert for border regions in Cambodia and Thailand, the second adjustment of travel warning in three days, as the tensions from the two countries' armed conflict are escalating.

SISAKET, Thailand, July 26 (Reuters) - When the Thai and Cambodian armies began shelling at their contested border on Thursday, Komsan Prachan thought his family was far enough away from the fighting to be safe.

Thailand and Cambodia exchanged heavy artillery fire for a second day on Friday as border fighting intensified and spread, while Cambodia's leader said Thailand had agreed to a Malaysian ceasefire proposal but then backed down.

Acting Thai Prime Minister Phumtham Wechayachai accused Cambodia of laying new landmines in the disputed area, resulting in an injury to a Thai soldier.