New York (CNN) Three babies were among five people stabbed early Friday at an unlicensed day care center in New York by an employee who then tried to kill herself, officials said.

The victims -- two girls and a boy, plus two adults -- were in critical but stable condition Friday at local hospitals, New York police said.

The babies range in age from 3 days to 1 month, New York police Assistant Chief Juanita Holmes told reporters Friday.

The facility was used mostly by Chinese women who give birth and stay there before returning to China, a law enforcement source tells CNN.

Neighbors say it was frequented mostly by Chinese parents, but Koreans and Africans were also seen there.

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