1 dead, several injured after chemical release at PEMEX facility in Texas

Texas industrial officials are responding to a chemical incident at a PEMEX facility in Deer Park that left one person dead and several injured Thursday.

The number of people injured is unknown, but one person was transported from the scene by Life Flight helicopter, officials said.

Harris County Sheriff Ed Gonzalez said the scene remains preliminary and fluid, but noted the "situation seems contained to the scene, and no threat to the external community."

In a statement to ABC News Thursday, PEMEX Deer Park said the gas release was reported at one of its operating units at 4:40 p.m. CDT.

The facility said members of its emergency response team, Channel Industrial Mutual Aid (CIMA) and Harris County Emergency Management personnel and other government agencies are on site and responding to the situation.

As officials assess the situation State Highway 225 has been temporarily closed, the facility said.

"Some members of the community may see flaring as we safely contain the situation," the facility said in the statement. "We are closely monitoring air quality and are not detecting any offsite impacts."

Officials from the city of Pasadena, Texas, said in a statement on X that the chemical released was hydrogen sulfide.

The PEMEX facility is a refinery that processes crude oil from several countries to produce gasoline, aviation fuel, diesel fuel and ship fuel.