Accident on Sunday night occurs at same pipeline in Guizhou province where eight were killed in July 2017 blast.
A gas pipeline operated by China National Petroleum Corp (CNPC) exploded on Sunday night in Guizhou province in southwest China, injuring 24 people, with three in critical condition, according to a posting on an official government Weibo account on Monday.
The blast occurred at 11:20pm on Sunday in the Shazi district of Qianxinan city in Guizhou province, Xinhua said. No deaths have been reported.
The same pipeline was the site of a previous explosion in July last year, which killed eight people.
Footage on Sunday night from state television showed the glare from the fire lighting up nearby buildings after the explosion.
The fire was out as of 2:30am local time on Monday, said the municipal government of Qianxinan Buyei and Miao autonomous prefecture on its official Weibo account.