A Southwest Airlines spokesperson said the FAA and DIA are supporting its investigation to determine what happened.
On Saturday night, flight 1905 was coming in from Oakland at around 5 p.m. when it slid off the taxiway with 125 passengers on board.
No one was injured.
The airline says once they determine what caused the incident they will take steps to make sure it doesn't happen again.
(KUSA-TV © 2012 Multimedia Holdings Corporation)