"There are nine deaths now, but there may be more as unidentified human remains have been found," Narathiwat's governor Sanan Phongaksorn said.
The source of the fire will be investigated later on. There is no concern of dangerous materials leaking at the site.
Since the United States pulled out of Afghanistan, more than 1000 civilians have been killed under the new Taliban regime. The bulk of those deaths occurred due to explosions.
The site of the explosion in the past served as a factory of Israeli Military Industries.
At least 16 people were injured, including seven who are in a critical condition, police said.
The deputy governor of Afghanistan's northern Badakhshan province was killed by a car bomb on Tuesday.
An explosion in space, dubbed AT2021lwx, is 10 times more powerful than a supernova and 3 times more than a star being devoured by a black hole – and it's been going on for 3 years.
Italian media said the explosion was suspected to have originated in a van transporting oxygen gas canisters.
Russian authorities say the region has seen multiple attacks by pro-Ukrainian sabotage groups in the 14 months since Russia invaded.
Social media images depicted burning buildings as well as mobilized police nationwide.