MANILA - Former Philippine leader Rodrigo Duterte's son urged President Ferdinand Marcos Jr to resign on Jan 28, calling him lazy and uncompassionate in a deepening rift between the two politically powerful families.

Mr Marcos teamed up with Mr Duterte's daughter Sara to make her vice-president in their 2022 election win. But cracks in the families' alliance have emerged as the incumbent has veered away from his predecessor's anti-drugs and foreign policies.

Mr Sebastian Duterte, who is mayor of the Philippines' third-most populous city Davao, said there had been a resurgence in crime after his father's hardline campaign had been relaxed.

At a leadership forum, he also accused Mr Marcos of endangering innocent Filipinos by allowing the Americans in, a reference to expanded US access to military bases, including several close to Taiwan. The older Duterte had forged closer ties with China.

Mr Sebastian Duterte also opposed Mr Marcos' decision to restart peace negotiations with communist rebels, saying he did not know anything about the suffering of people living in areas that used to be rebel strongholds.

"You are lazy and you lack compassion. That's why we are unhappy," he said.

Midterm elections loom     

He spoke just before Mr Marcos took the stage at a government-led rally in the capital to drum up support for his “Bagong Pilipinas (New Philippines)” campaign, where he has promised to improve state services and budget transparency.

Mr Marcos' alliance with the Dutertes was crucial to his presidential victory, so a souring of their relations could have implications in his bid to solidify his support base ahead of the midterm Senate and congressional election in 2025.

Ms Sara Duterte, who is also education secretary, attended the President's rally before flying to Davao to join her father and siblings at a prayer rally against moves to amend the Philippine Constitution, which Mr Marcos backs.

Some opponents of constitutional change, including the Dutertes, say it is driven by an agenda to change the political system and remove term limits, including that of the president, who can currently serve just one six-year term.

“He is putting politics first, their self-preservation… rather than focusing on the job,” Mr Sebastian Duterte said.

“Mr President, if you have no love and aspirations for the nation, resign.”

Like her brother, Ms Sara Duterte has openly defied some of Marcos’ policies, including the peace talks with communist rebels, which she said was an “agreement with the devil”.

There was no immediate comment from President Marcos' office or from the vice-president on Mr Sebastian Duterte's remarks. REUTERS