MANILA -- Malacanang on Sunday called for better enforcement of mining regulations after a landslide in Compostela Valley killed three miners.

"We are aware that regulations are all there. What we need is stricter enforcement to prevent a repeat of what happened," Deputy presidential spokesperson Abigail Valte said over dzRB.

Police and military teams are still looking for 21 miners missing since Friday, when the landslide hit a small-scale mining area in Pantukan that had already been declared off-limits.

According to the National Disaster Risk Reduction and Management Council, soldiers from the 71st Infantry Batallion, local police, and civilians have been conducting search, rescue, and recovery operations.

Three Philippine Air Force helicopters have also been sent to assist in the search.(Jonathan de Santos/Sunnex)