On Sunday night, a Frontier Airlines flight at Denver International Airport was quickly evacuated after a gun magazine was found in the aircraft.

Subscribe to read this story ad-free

Get unlimited access to ad-free articles and exclusive content.

Frontier flight 4765, which was scheduled to travel from Denver to Phoenix, was promptly evacuated after the discovery, according to a Frontier Airlines statement Monday.

Passengers were deplaned and rescreened, and a security sweep of the aircraft was conducted. There were no reports of injuries.

“Given the delay, the flight crew exceeded their duty time and thus customers were booked on a new flight for early this morning,” Frontier added.

The flight was then rescheduled and left at 6 a.m. MST Monday. It arrived in Phoenix Sky Harbor International Airport at 6:50 a.m.

It is unclear where or how the gun magazine was discovered or whether a passenger physically had the magazine on them.

This comes days after another Frontier plane was evacuated after striking a person on a Denver International Airport runway.

On Friday night, around 11:00 pm, the Frontier flight was preparing to travel to its destination at Los Angeles International Airport before hitting a trespasser.

The passenger jet, carrying roughly 231 people, filled with smoke after the collision, and had evacuated everyone using inflatable evacuation slides.

The person who died has not been identified.