Authorities are investigating a possible incident of ground heating in a residential area in Quezon City, the National Disaster Risk Reduction and Management Council said Sunday.

In its 6 a.m. report, the NDRRMC said the incident was reported by Jane Filio of 19 Manalo Street in Barangay Del Monte, who said the temperature rise started as early as October 17.

The NDRRMC said Filio observed a square foot of their floor tiles in their living room “felt hotter” at about 8 p.m. last October 17.

Last Friday, October 19, the hot spot expanded to about one square meter, prompting Filio to report the incident.

Some 13 people affected by the incident are now staying in the family garage. They tried to manage the situation by placing wet rags on the floor.

City fire officials inspected the area but could not determine the source of the heat, and advised Filio to coordinate with the Philippine Institute of Volcanology and Seismology (Phivolcs).

The Manila Electric Co. cut the power line at 7 p.m. Friday, the NDRRMC said.

A city rescue team inspected the area Friday night and coordinated with the Environment Department but were told to refer the matter to Phivolcs.

On Saturday night, the team returned and found the affected floor area widened to nine square feet though the temperature had decreased.

The Office of Civil Defense is now monitoring the incident, the NDRRMC said. — LBG, GMA News [October 21, 2012 8:58am]