https://www.foxnews.com/us/arizona-mom-sang-to-young-children-as-she-smothered-them-policeAfter allegedly killing her three children Monday, Rachel Henry "placed all of the children in a position on the living room couch as if they were taking a nap," according to court documents released Tuesday evening.
Earlier, the Arizona mother reportedly sang to each of them as she suffocated them -- even to the 3-year-old son who yelled "No!" as the mother killed his 1-year sister, FOX 10 of Phoenix reported.
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Henry, 22, who was charged with three counts of first-degree murder, first placed her hand over her 1-year-old daughter’s mouth until she stopped breathing, Phoenix police said, according to the station.
"Rachel knew she killed the 1-year-old female when she stopped kicking," a Phoenix police officer wrote, according to The Arizona Republic.
While she was killing the 1-year-old, her 3-year-old son screamed and hit her to try to stop her, FOX 10 reported.