International Desk : At least 11 people have been killed in a roof collapse in a middle school gymnasium in Qiqihar City of China, rescuers said Monday.

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Xinhua News Agency said that all 15 trapped were pulled out as the last trapped person was found Monday morning without vital signs, the rescue headquarters for the accident said at around 10 a.m.

The remaining four people have been checked without life-threatening injuries.

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According to the provincial fire and rescue department, the roof collapse was reported at 2:56 p.m. Sunday. There were 19 people in the gymnasium covering about 1,200 square meters at the No. 34 Middle School of Qiqihar in Longsha District when the accident occurred. Four people escaped on their own and 15 were trapped, the municipal search and rescue headquarters said.

A preliminary investigation found that construction workers illegally placed perlite on the roof of the gymnasium during the construction of a teaching building adjacent to the gymnasium. Under the influence of rainfall, the perlite soaked up water and gained weight, resulting in the roof collapse.

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An in-depth investigation is ongoing. Those in charge of the construction company have been taken into police custody.

Sun News/MR

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