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New York tourist stabbed while changing baby’s diaper in Macy’s restroom, suspect charged: Police

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Woman arrested after stabbing at New York City Macy's store
Kena Betancur/AFP via Getty Images
ByMason Leath, Mark Crudele, and Aaron Katersky
December 13, 2025, 2:34 AM

A woman was arrested Thursday afternoon after allegedly stabbing a tourist inside the Macy's flagship store in New York City, according to police.

Kerri Aherne, 43, from Tewksbury, Massachusetts, allegedly stabbed the tourist multiple times as she was changing her infant daughter's diaper in a seventh floor restroom at Macy’s Herald Square location, the New York Police Department said.

Exterior view of Macy's herald square store in New York City, on November 28, 2025.
Kena Betancur/AFP via Getty Images

The baby was uninjured, and the victim was taken to Bellevue Hospital in stable condition, according to police.

Aherne allegedly stabbed the tourist, who was visiting Manhattan from California, in her back and arm from behind just before 3 p.m. before her husband disarmed the suspect and held her until police arrived.

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A spokesperson for the Los Angeles County Sheriff's Department said that both the victim and her husband work for the LASD.

Aherne was charged with two counts of assault, attempted murder, criminal possession of a weapon and endangering the welfare of a child.

She was ordered held without bail after appearing in court on Friday.

The Manhattan District Attorney's Office said Aherne was previously arrested in Massachusetts for threatening to kill Sen. Elizabeth Warren. The woman told police she has been hospitalized for psychiatric problems.

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A Macy's spokesperson told WABC that "we are deeply saddened about the incident that took place today as the safety of our customers and colleagues is our top priority. We kindly defer any further questions to the local authorities."

Police said the attack appears to be unprovoked and is currently under investigation.

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