"She was screaming standing over her, saying what's wrong," Ricco said.
Found in frigid overnight temperatures, the little girl fell to her death four floors from the roof.
Police commissioner Raymond Kelly said no other footprints were Found in snow on the roof from where Martin fell shortly after 1:00 a.m.
Surveillance cameras in the hallway, police revealed, captured the little girl leaving her apartment alone. Another camera caught her climbing the stairs and going through the door to the roof.
"People apparently didn't hear the alarm," Kelly said.
As neighbors created a memorial from small toys, police continued talking to the child's parents in hopes of learning when they last saw the child.
