A Texas paramedic who helped evacuate people on the night of the deadly fertiliser plant explosion in West has been arrested and charged with possessing a destructive device.
It is not clear whether the charge is related to the fire or the explosion at the West Fertiliser Company last month that killed 14 people.
Paramedic Bryce Reed did not enter a plea when he made his initial court appearance in federal court on Friday in Waco, federal prosecutors said.
Assistant US Attorney Mark Frazier would not release further details.
A fire erupted at the plant on April 17 and a massive explosion rocked the town of West about 20 minutes later.
Investigators have largely treated the incident as an industrial accident. But Texas law enforcement officials also launched a criminal investigation on Friday.