Mexican emergency crews are responding to a major fire at a Pemex oil facility in the port city of Coatzacoalcos that started after a powerful explosion. Hundreds of people in nearby areas have been evacuated. At least 30 factory workers are known to have been injured in the blast, Petróleos Mexicanos, or Pemex, said in an updated statement on its Twitter account.

Pemex added that the explosion took place at the Clorados 3 (Chlorine 3) plant, which is operated by Mexichem, an associate company. Footage of thick, dark smoke rising into the air was posted online following the blast. Local media report that the explosion has released toxic substances, such as Chloroethane, into the air. FULL REPORT