At least four people were killed after a 6.6-magnitude earthquake struck the southern Philippines on Tuesday, just over a week since a strong tremor jolted the same area and left seven people dead.
The quake"s epicentre was located inland northeast of Tulunan town in Cotabato province, 972km (604 miles) south of Manila, the Philippine Institute of Volcanology and Seismology said.
Seismology experts said there were no threats of a tsunami.