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LIBERTY, Mo. -- Police surrounded a Hardee's restaurant near 291 Highway and South Withers on Tuesday evening where there were reports of a gunman inside the restaurant who was refusing to come out of the building.

Liberty Police wrapped up their work at the standoff at about 8:30 p.m., and found nobody inside the restaurant.

Earlier on Tuesday night, employees said a customer came in and muttered something, then pulled a gun and barricaded himself in the bathroom.

SWAT approaching Hardee’s in Liberty where man allegedly barricaded self in restroom #fox4kc pic.twitter.com/eeoChzdOY1 — Kera Mashek (@KeraFox4KC) October 10, 2017

Update: all employees out. Police trying to determine if suspect still inside. #fox4kc pic.twitter.com/wxicNeem3e — Kera Mashek (@KeraFox4KC) October 10, 2017

FOX 4 will update this story as police release more information about the investigation.