A Texas paramedic who helped evacuate people on the night of the deadly fertilizer plant explosion in West has been arrested and charged with possessing a destructive device.

It's not clear whether the charges are related to the fire or the explosion at the West Fertilizer Co. last month that killed 14 people.

McLennan County Jail booking clerk Brandy Gann says paramedic Bryce Reed arrived at the jail at about 2:40 a.m. Friday and was released to federal agents before 8 a.m.

A fire erupted at the plant the night of 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 Friday.