NOORDWIJK AAN ZEE, Netherlands — The Philippine government on Sunday formally called off the latest round of peace talks with leftist insurgents, after the parties failed to resolve a dispute over a rebel order for fighters to step up attacks.

"We are maintaining the decision made not to participate in the fifth round of talks," chief government negotiator Jesus Dureza told journalists after almost 10 hours of closed-door consultations.

"There are no compelling reasons for us to change the decision... which we announced yesterday," he said, adding that Manila was "formally" withdrawing from the round.

It was the fifth scheduled round of talks since the resumption of formal negotiations between Manila and the leftist in August.

They were meant to address such issues as a joint interim ceasefire, social and economic reforms and human rights issues.

’Just and sustainable peace’ 

The breakdown of the talks, held in a scenic Dutch seaside resort, came as fighting flared on Sunday between Philippine government forces and Islamist militants in the south, with the death toll nearing 100 after almost a week of fighting.

Talks stalled on Saturday when Dureza objected to the leftist forces’ telling guerrillas to intensify attacks in response to President Rodrigo Duterte’s declaration of martial law in parts of the country.

Dureza said on Sunday that the talks would not resume until there were indications of an "environment conducive to achieving just and sustainable peace".

Asked whether this included the leftist’s order to escalate attacks, Dureza said: "It is a factor."

But Dureza, who is also Duterte’s chief advisor, emphasised that the withdrawal from this round of talks was not a formal withdrawal from the peace process initiated in August 2016.

"The peace talks have not been cancelled and the peace process remains intact," added Elisabeth Slattum, special envoy of Norway, which has been facilitating the peace talks.

Duterte declared martial law on Tuesday across the southern third of the Philippines to quell what he called a fast-growing threat from terrorists linked to the Islamic State group.

Leftist insurgents, who are active in wide areas of the archipelago, including the south, responded to Duterte’s declaration by ordering their own forces to "carry out more tactical offensives".

Deep regret 

Chief rebel negotiator Fidel Agcaoili said the leftist negotiators had "recommended to our leadership to reconsider the order, but that takes time".

He said the NDFP, a coalition of several groups of which the Communist Party of the Philippines (CPP) is among the most prominent, "deeply regretted" Manila’s decision to shelve the talks.

In a statement the NDFP lashed out at Dureza’s comments on the order, saying it "totally obscures the fact that the government has been waging an ’all-out-war’ against" the New People’s Army (NPA), the CPP’s armed wing.

Peace talks have been conducted on and off for 30 years, and were revived after Duterte was elected president last year.

Norway had coaxed the two sides back to the negotiating table in August, but little progress has been made since then. — AFP