Zamboanga City, June 8 -- The city government has ordered the suspension of classes at all levels, including work in both local and national agencies, following a strong earthquake that hit parts of Mindanao earlier Monday.

Mayor Khymer Olaso clarified, however, that offices providing essential and frontline services must continue normal, uninterrupted operations to serve the public.

The Philippine Institute of Volcanology and Seismology (Phivolcs) said Intensity 4 was recorded in this city when a 7.8 magnitude earthquake shook several parts of Mindanao around 7:37 a.m.

The earthquake's epicenter is located 32 kilometers southwest of Maasim, Sarangani.

Olaso has advised authorities to inspect the structural integrity of all buildings...