JINAN - Three people were killed and four others remain trapped after a roof caving accident at an iron ore mine in East China's Shandong province on Saturday, local authorities said.

Seven miners were trapped when the accident occurred at around 3:20 pm at the mine in Lanling county in the city of Linyi, according to the county's emergency management bureau.

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As of 9 pm, the bodies of three miners had been recovered. The other four miners are still being trapped. Rescue work is ongoing.