Flight 1006, which was headed from the Colorado Springs Airport to Dallas Fort Worth, diverted to Denver and landed safely around 5:15 p.m. after the crew reported engine vibrations, the Federal Aviation Administration said in a statement.

While taxiing to the gate, an engine on the Boeing 737-800 caught fire, the FAA added.

Photos and videos posted by news outlets showed passengers standing on a plane’s wing as smoke surrounded the aircraft. The FAA said passengers exited using the slides.