TAIPEI -- Taiwan Semiconductor Manufacturing Co. was working to assess the impact of a 6.4-magnititude earthquake on its most advanced chip production hub on Tuesday morning, with workers returning to their job sites hours after the quake struck.

A 6.4 magnitude earthquake struck a mountainous, rural area of Taiwan's south on Tuesday near the city of Chiayi, the island's weather administration said, with reports of minor damage. Chipmaker TSMC said it had evacuated staff at its factories in central and southern Taiwan,

An earthquake with a preliminary magnitude of 6 struck southern Taiwan early Tuesday, according to the U.S. Geological Survey, leaving 15 people with minor injuries.