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.

A California woman changing her infant daughter’s diaper in the bathroom of the Macy’s Herald Square store in New York City was stabbed and injured by another woman in an unprovoked attack, police sai...