"We are scared up to now because of the aftershocks," Surigao del Sur disaster agency chief Alex Arana told DZBB radio station on Monday.
His coastal province was closest to the epicentre of the magnitude 7.4 earthquake, which struck late on Saturday and was followed by aftershocks.
It was also the most damaged area.
A magnitude 7.4 earthquake has killed three people in Surigao del Sur province in the Philippines. (AP PHOTO)
Two people died - one as a result of falling debris and another because of a collapsed wall - and eight were injured in Surigao del Sur, Arana said.
A pregnant woman was killed when a wall collapsed as she and her family were fleeing their home in Tagum city in Davao del Norte province.
As of late on Sunday, more than 108,000 people were staying in 115 evacuation centres in Surigao del Sur, government data showed.
A magnitude 6.8 earthquake, with a depth of 1km, struck Mindanao in the Philippines in the early hours of Monday, the Philippine seismology agency reported.
Quakes in the Philippines have forced some 108,000 people to flee to 115 evacuation centres. (AP PHOTO)
It was not part of the magnitude 7.4 quake and about 1700 aftershocks, officials said.
"We get dizzy from tremors every so often," Susan Clor, a resident of Hinatuan town in Surigao del Sur, told GMA television station.
"We choose to stay here at the evacuation centre for now."
Earthquakes are common in the Philippines, which lies on the "Ring of Fire", a belt of volcanoes circling the Pacific Ocean that is prone to seismic activity.
