At least 12 people were killed and 135 others were injured when an earthquake hit southwestern China on Monday, officials said.

First responders rescued at least eight people on Tuesday who were trapped following the quake, which collapsed 73 houses.

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Hundreds of firefighters were involved in rescue efforts to save those who were believed to be trapped, the Chinese Ministry of Emergency Management said.

The 6.0-magnitude earthquake and 5.1-magnitude aftershock hit the Sichuan province late Monday night, while aftershocks continued into Tuesday morning.

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While more than 4,400 people have been evacuated from the area, local news outlets reported most of the deaths were caused by damage to houses.

The Associated Press contributed to this report.