He also said one mudslide slammed into about 30 shanty homes, followed by another that swept away a house.
About 19 people, most of them miners working in the area, were treated for injuries.
Uy said the landslide-prone region was saturated after days of rain and residents had ignored warnings to leave.
"We have been asking them to leave, and we are planning to cordon the area," he said.
"We are happy to have this gold mining area here. But the dark side are the deaths that occur in these natural calamities."
Uy said 17 of 30 miners pulled out from the rubble on Monday were treated in hospitals.
Last month, the local government ordered the suspension of small-scale mining operations in the area due to bad weather conditions, but some miners ignored the order and continued working.
Landslides and floods are common in the Philippines during the monsoon months between May and October, particularly near mining areas.