An American Airlines flight from Phoenix to Minneapolis was forced to make an unscheduled stop on Friday.
That's when a male passenger became unruly, punching seats, yelling at other passengers and smoking cigarettes.
According to CNN, the man became disruptive about one hour after takeoff.
Witnesses say the man began yelling and making threats toward the other passengers.
The flight landed in Denver and the man was removed from the plane by law enforcement.