Investigators now believe the man was climbing on the railing of the escalator before he fell.
From the Daily News:
Antonio Narainasami, who leaves behind two children and a pregnant wife, fell about four stories when he lost his balance while sitting on the mezzanine level's escalator rail after Tuesday night's game, police sources said.
"Several witnesses said they saw him start to play on the escalator before he fell," a police source said. "It's an unfortunate accident."