(AP) — Residents of a small town in southwestern Wyoming are being allowed to return home nearly 22 hours after an explosion at a natural gas processing plant forced their evacuation.

No injuries were reported in the explosion at about 2 p.m. Wednesday in Opal (oh-PAL’). The town of about 95 people about 100 miles northeast of Salt Lake City was evacuated as a precaution against further explosions and smoke.

Lincoln County spokesman Stephen Malik said that the evacuation order was lifted shortly after 11:30 a.m. Thursday.

Malik says a fire is still burning at the plant but authorities say it and the smoke no longer pose a risk.

There’s no immediate word on what caused the explosion.