Social media was flooded with dramatic videos of a massive explosion at a Texas crude oil refinery on Monday (US time). Local US news outlets reported that loud sounds sent shockwaves through the western part of Port Arthur, Texas, as an explosion was reported at part of a Valero refinery.

According to Jefferson County Sheriff Zena Stephens, the explosion could have possible involved a mishap with a heater unit, Kare 11 reported. No injuries have been reported so far.

The facility is responsible for roughly 770 workers’ employment and produces over 435,000 barrels of gasoline, diesel and jet fuel daily, according to Valero’s website.

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Shocking videos of Texas oil refinery blast

Multiple photos and videos circulating on X captured the fear-inducing visuals at the Valero refinery in Port Arthur after an unprecedented explosion. Dark and large plumes of smoke were seen emanating from the establishment in flames.

Authorities have since issued a shelter-in-place order for nearby residents. According to local news outlet KARE 11, interim Port Arthur Fire Chief Louie Havens said two engines were first sent to the scene of the fire and a hazmat team was also deployed to Valero.n

The explosion at the crude oil refinery couldn’t have come at a worse time as the ongoing war in Iran has severely impacted global oil supply and triggered a spike in gas prices.

Some residents even reported hearing a loud boom and seeing their windows shake, according to the Associated Press.

Texas state Rep Christian Manuel took to his social media profile to share that the Texas Commission on Environmental Quality was monitoring the air quality and working local and state partners in light of the unexpected mishap.