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Tainan, Taiwan • The death toll from a powerful earthquake that toppled a high-rise apartment building in Taiwan rose to at least 34, according to government figures Monday, as rescuers dug through rubble for survivors more than 48 hours after the quake struck.

More than 100 are believed to be still buried in the collapsed building from a disaster that struck during the most important family holiday in the Chinese calendar — the Lunar New Year holiday.

The government in Tainan, the worst-hit city, said that more than 170 people had been rescued alive from the 17-story building, which folded like an accordion during the quake.

The extended Lunar New Year holiday officially started Monday, but celebrations were subdued and both President Ma Ying-jeou and President-elect Tsai Ing-wen canceled handing out envelopes of cash in their hometowns, a holiday tradition for Taiwan's leader.

The Tainan Disaster Emergency Center estimated that 118 people were still trapped at the site of the collapsed building, many at the bottom of the debris. Tainan Mayor Lai Ching-te said rescuers were able to reach many people by using information from residents who got out about the possible locations of those still inside.

Earthquakes frequently rattle Taiwan, but most are minor and cause little or no damage, though a magnitude-7.6 quake in central Taiwan in 1999 killed more than 2,300 people.

The spectacular fall of the high-rise, built in 1989, raised questions about whether its construction had been shoddy. Tainan's government said the building had not been listed as a dangerous structure. Taiwan's Interior Minister Chen Wei-zen said an investigation would examine whether the developer had cut corners.

Eighth-floor resident Huang Guang-wei was pulled out Sunday morning from a different section from where he lived, showing how much the building twisted when it fell, Lai said. It took rescuers eight hours to get Huang out, he said.

A 6-month-old baby girl was pulled from the rubble and rushed to a hospital, but she was pronounced dead. A deceased man believed to be her father was pulled out 40 minutes later, local official Wang Ding-yu said.

A man in his 60s, whose son had escaped and whose daughter-in-law was in serious condition, was trying to help rescuers pinpoint his grandsons. "My 11- and 12-year-old grandsons are still inside on the ninth floor," said the man, who gave only his surname, Huang. "I told my son not to buy an apartment here; it was suspiciously cheap."

Beside him, another man nodded in agreement as he waited for news of his relatives on the seventh floor.

The emergency center said 171 people had been rescued from the building, 92 of whom were sent to hospitals. More than 100 people were rescued from other parts of Tainan. Nine other buildings in the city collapsed and five careened.