Six children among 23 killed in Taiwan earthquake

An infant is rescued from a collapsed building in Tainan, Taiwan, Saturday, Feb. 6, 2016. [Photo/IC]

Rescuers still hear calls for help from inside collapsed building

Firefighters and soldiers used ladders, excavators and other equipment to pull survivors out of rubble and through twisted windows.

Volunteers from the area are helping locals register unreachable relatives.

Rescuers on site said they could still hear calls for help from inside the collapsed building, but have to consolidate the collapsed building parts first before saving the rest.

Earthquakes frequently hit Taiwan. Most of them are minor, but a 7.3-magnitude quake, the strongest to hit Taiwan in about 100 years, shook the island on Sept. 21, 1999, leaving more than 2,000 people dead.