BEIJING (AP) — The death toll from an explosion at a fireworks plant this week in central China has risen to 37, state media reported Friday.

Local authorities said one person remains missing, according to China’s official news agency Xinhua.

The blast occurred Monday at a fireworks plant in the city of Changsha in Hunan province. Authorities have said they are still investigating the cause and have ordered the halt of all fireworks manufacturing in the surrounding area.

Initial reports also said that more than 60 people were injured.

State media China Daily said that the plant was operated by the Huasheng Fireworks Manufacturing and Display Co. in the Changsha-administered, county-level city of Liuyang, a prominent fireworks powerhouse in the country.

Liuyang has a long history of fireworks production. The Guinness World Records organization said that the first accurately documented firework, the Chinese firecracker, was attributed to Li Tian, a monk who lived near Liuyang during China’s Tang dynasty dating to around 618 to 907 C.E.

In February, China reported two deadly explosions at fireworks shops around the Lunar New Year period.