Manila, March 9 -- The Philippine National Police (PNP) is on alert for protests on March 11, marking one year since former president Rodrigo Duterte's arrest, transfer and detention in The Hague.

In a statement on Monday, PNP chief Gen. Jose Melencio Nartatez Jr. said social media monitoring has flagged posts calling for a massive motorcade rally.

The planned route reportedly spans EDSA, ending at Villamor Air Base, to mark Duterte's first anniversary in international custody for crimes against humanity.

"We are closely monitoring developments and coordinating with local units to ensure public safety," he said.

"While we respect the right to peaceful assembly, we also have the mandate to ensure that there will be no incident that wil...