Guests at the the 30-story Luxor Hotel and Casino were allowed to re-enter their rooms just before 3:30 p.m Wednesday.
According to Metro Police, the 27th, 28th and 29th floors were evacuated after an unknown container with unspecified liquids was found in one of the rooms at the resort.
Investigators said the liquid found in room was determined to be non-hazardous.
Hotel spokeswoman Yvette Monet says a guest-room attendant found the substance and notified hotel officials. Police Officer Laura Meltzer says police were notified a little after 11 a.m., and Buchanan says firefighters were summoned shortly before noon.
Metro's Armor Unit was deployed to the scene to investigate. Deputy Clark County Fire Chief Jeff Buchanan said no injuries were reported.
Monet says about 54 guests were asked to evacuate.
The Luxor has about 4,400 rooms in three towers.
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