The 6.5 magnitude quake hit the island of Mindanao, the US Geological Survey said, in the same area where a strong tremor killed at least six people on Tuesday.
"Everyone rushed outside," said Reuel Limbungan, mayor of the Tulunan town, which was once again near the epicentre.
USGS initially said the quake had a magnitude of 6.8, and added there was no threat of a tsunami.