A passenger spotted the errant alligator under an airport escalator . The animal was taken to a local zoo and released into its natural habitat, according to KHOU.com. The man holding the alligator in the tweeted photos also had unusual markings -- a tattoo on his arm that could help investigators identify him . Twitter photos show an alligator on the Blue Line train to O'Hare .
A passenger spotted the errant alligator under an airport escalator . The animal was taken to a local zoo and released into its natural habitat, according to KHOU.com. Twitter photos show an alligator on the Blue Line train to O'Hare .