Rescuers combed through the rubble of collapsed buildings on Wednesday, as they searched for about 60 people missing after a strong earthquake killed at least five near the popular Taiwanese tourist city of Hualien overnight, Reuters reported.

The magnitude 6.4 quake, which hit near the coastal city just before midnight (1600 GMT) on Tuesday, also injured 243 people and collapsed four buildings, Reuters confirmed quoting officials.

Hualien Mayor Fu Kun-chi said the number of people missing was now close to 60, although an exact figure was not provided. As many as 150 were initially feared missing.

Many of the missing were believed to be still trapped inside buildings, some of which were tilting precariously, after the quake hit about 22 km (14 miles) northeast of Hualien on Taiwan’s east coast.

At the city’s Marshal Hotel, rescuers trying to free two trapped Taiwanese pulled out one alive, but the other person was declared dead, the government said.

Among the injured were mainland Chinese, Czech, Japanese, Singaporean and South Korean nationals.

Aftershocks with a magnitude of at least 5.0 could rock the island in the next two weeks, the government said. Smaller tremors rattled nervous residents throughout the day.

Residents waited and watched anxiously as emergency workers dressed in fluorescent orange and red suits and wearing helmets searched for residents trapped in apartment blocks.

Hualien is home to about 100,000 people. Its streets were buckled by the force of the quake, with around 40,000 homes left without water and around 1,900 without power. Water supply had returned to nearly 5,000 homes by noon (0400 GMT), while power was restored to around 1,700 households.