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ClosePolice in China's Shaanxi province say they have detained a 47-year-old man for damaging a government building with "construction machinery" on Monday afternoon.
Videos circulating on social media show an excavator tearing down the facade of the building. Local media reported that staff inside the building were urgently evacuated.
No one was injured in the incident, said the police, who did not provide a motive for the act.
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