AKIPRESS.COM - The number of people killed by the magnitude-6.4 earthquake that struck southern Taiwan has risen to 94, authorities said.

An additional 550 people were wounded when the quake struck Saturday morning, the country's National Fire Agency said Friday.

All but two of the dead were killed in the collapse of an apartment complex in Tainan, the oldest city in Taiwan, CNN reports.

Aerial images in the immediate aftermath of the temblor showed the Weiguan Golden Dragon tower, transformed into rubble. Structures around it remained intact.

"There are so many other older buildings in Tainan that are still standing. Why was it only this building that was completely destroyed?" asked Wang Xingyou, a city cab driver.

At least 30 people are unaccounted for and believed to be trapped under the rubble, according to the National Fire agency.

Three people -- all former executives of the company that built the collapsed apartment building -- were arrested Tuesday and face charges of professional negligence resulting in death.