Beijing (CNN) A powerful explosion ripped through a chemical plant in eastern China Thursday, killing at least 64 people and severely injuring more than 90 others.

Firefighters were still battling small fires Friday, after working through the night to put out the main blaze, state media reported.

Drone footage from the country's emergency management ministry shows an industrial area outside Yancheng city in Jiangsu province covered in firefighting foam, with storage tanks turned to twisted metals and charred factory buildings with roofs torn open.

Local authorities said earlier that dozens of fire trucks and hundreds of firefighters rushed to the scene after the blast was reported around 2 p.m. Thursday. The explosion was powerful enough for the seismological bureau to detect a small earthquake in the area, according to state media.

Firemen work following an explosion at a chemical plant in Yancheng in China's eastern Jiangsu province early on March 22, 2019.

National broadcaster CCTV aired dramatic surveillance and cell phone videos of windows blown out in nearby buildings at the time of blast, with witnesses telling reporters the impact could be felt as far as 5 kilometers (3 miles) away and others saying they suffered cuts from broken glass.

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