The blast occurred in a chemical workshop in the Anda city early on Saturday at around 12:46 a.m. local time (16:46 Friday, GMT). Following the blast, the plant caught fire, which was not extinguished until later in the morning, it was reported.
One person has been confirmed dead and two people are still reportedly missing. Among the four people injured by the blast, two have sustained serious injuries, the report read.
"One person was killed & four injured, two of them - critically. Two people remain missing", a tweet, allegedly depicting the area after the blast, says.
A task force of the Chinese Ministry of Ecology and Environment is examining the site of the explosion to determine if there were any leaks of dangerous chemical substances into the environment.
The cause of the blast remains unknown at this point.