BANGKOK (Reuters) -Clashes between Thai and Cambodian troops took place along their border for a second day early on Friday, with Cambodia using heavy weapons including artillery and rockets, Thailand's military said.

A long-simmering border dispute between Thailand and Cambodia escalated to deadly violence on July 24 as their military forces clashed at multiple spots.

A Thai F-16 fighter jet bombed targets in Cambodia, both sides said, as weeks of tension over a border dispute escalated into clashes on Thursday that have killed at least 12 people, including 11 civilians.