PERTH AMBOY, N.J. (CBSNewYork) — Three middle school students were being hailed as heroes Wednesday after coming to the aid of a helpless 14-month-old girl who had wandered out of her grandmother’s house in New Jersey.

“If it wasn’t for them we would be talking about something else right now — how tragic it was,” Det. Ken Puccio said. “I guess a guardian angel was watching her yesterday until these three guardian angels came along.”

1010 WINS’ Steve Sandberg reports

The toddler slipped out of an open door, down a flight of stairs and crossed a busy street in Perth Amboy on Tuesday afternoon, police said. Authorities said she walked out of her grandmother’s home after her cousins left the door open by mistake, CBS 2’s Christine Sloan reported.

Danni Canela, 13, Christopher Angeles, 13, and Angelina Moreta, 12, were walking home from the McGinnis Middle School when they saw the girl crying and bleeding from her mouth on Market Street.

“The little girl fell on the street and they noticed that she was bleeding,” a translator for the students said. “She [Angelina] sent Danni to pick up some papers to clean up the girl.”

The trio grabbed the child and asked as crossing guard, who called police, for help.

The toddler was reunited with her grandmother.

Police said the toddler was gone for less than ten minutes and that no one is at fault or will be charged.

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