American Airlines Flight 3023 reported a “possible landing gear incident” during its departure from Denver International Airport on Saturday afternoon, the Federal Aviation Administration said.

Denver police on Monday afternoon confirmed passengers on a flight arriving at Denver International Airport were evacuated due to a threat that “appears to be unfounded at this time.”

More than 170 passengers evacuated an American Airlines plane at Denver International Airport on Saturday, using emergency slides amid swirling smoke from a small fire.