Thailand and Cambodia exchanged heavy artillery on Friday (Jul 25) as their worst fighting in more than a decade stretched for a second day, despite calls from the region and beyond for an immediate ceasefire in an escalating border conflict that has killed at least 15 people.

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.

Cambodian forces conducted sustained bombardment utilising heavy weapons, field artillery, & BM-21 rocket systems,' Thailand said. Thai forces responded with supporting fire.