Chipmaker TSMC said on Tuesday that all its sites were operating following an overnight earthquake in southern Taiwan.

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.

Taiwan Semiconductor Manufacturing Co. has restored operations at factories it evacuated after a 6.4 magnitude earthquake struck the island’s south, injuring at least four people.