The actor, who played Tyrese in the hit zombie show, was seen in footage obtained by TMZ.com storming up and down the train carriage while apparently shouting at passengers.

Most of Coleman's rant is incoherent and as he shouts, onlookers move away from the star.

Editors at TMZ.com spoke to Coleman and he is adamant his anger was sparked by another passenger who uttered a racial slur at him.