The passengers in question appear to have been drunk, reports say.
A video has been making the rounds recently of passengers on a train at Denver International Airport on Friday. Video footage shows a group of people getting into a fistfight while the train was traveling from the main airport terminal.
According to KDVR, witness Audrey Giger said the two people who instigated the brawl seemed drunk.
Giger was also concerned due to the proximity of the fight being close to a baby on board the train.
"That's really where I lost my cool," Giger told the news outlet.
The Denver Police Department said none of the people involved in the fight will be charged in the case, reports say.
Watch the chaotic brawl on the Denver airport train below:
Video courtesy of KDVR (YouTube)