The Latest on a 6.4-magnitude earthquake in southern Taiwan (all times local):

7: 40 a.m.

Taiwan's official news agency says rescuers have pulled out more than 120 people from a 16-story residential high-rise that collapsed in a 6.4-magnitude earthquake.

An unknown number are still trapped. The Central News Agency says about 200 people are believed to be inside the Wei Guan building in southern Tainan city when the quake struck at 4 .a.m.

Several other buildings are also collapsed or partially damaged.

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7:25 a.m.

Taiwan EBC TV station is broadcasting live images of firefighters pulling out stunned and dazzled survivors from a collapsed high-rise in the south of the island following a 6.4-magnitude earthquake.

The temblor struck about 4 a.m. local time Saturday (2000 GMT Friday). It was located some 22 miles (36 kilometers) southeast of Yujing, and struck about 6 miles (10 kilometers) underground.

Aerial views of the collapsed building showed cranes and ladders around the toppled structure. White dust is rising from site and a helicopter hovering overhead. The damage to the building appears extensive, with blocks of concrete and entire floors brought down by the force of the quake.

Military personnel also are taking part in the rescue.