TAIPEI (Reuters) -Chipmaker TSMC said on Tuesday that all its sites were operating following an overnight 6.4 magnitude earthquake in southern Taiwan that was centred on a mountainous rural area and caused only minor damage and light injuries.

Taiwan Semiconductor Manufacturing Co. evacuated factories following a 6.4 magnitude earthquake near the city of Chiayi that injured at least four people and suspended work at factories across the island’s south.

A magnitude 6.4 earthquake and resulting aftershocks in Chiayi early Tuesday morning triggered a shutdown and evacuation of TSMC's advanced process production lines in both the Southern and Central Science Parks.