Phnom Penh: Cambodia's influential former leader Hun Sen confirmed Tuesday that his country retaliated in the renewed border clashes with Thailand after two days of restraint.

"After being patient for more than 24 hours in order to respect the ceasefire and for time to evacuate people to safety, yesterday evening we retaliated with more (responses) last night and this morning," Senate President and former Prime Minister Hun Sen stated on Facebook.

"Our forces must fight at all points that the enemy has attacked," he instructed troops, urging them to "implement the strategy to destroy the enemy forces." He added, "Now we fight in order to defend ourselves again."

The announcement contradicted earlier claims by Cambodia's defence ministry spokeswoman Maly Socheata, who maintained Monday that Cambodian forces had not fired back at Thai attacks.

This week's renewed fighting has killed six Cambodian civilians and one Thai soldier, with over 20 wounded, following Thailand's Monday air strikes and tank deployment. Both nations blame each other for instigating the clashes.

Summer combat between the Southeast Asian neighbours killed 43 people and displaced around 300,000 before a truce.

With inputs from AFP