A mother was assaulted on the subway in New York after her child asked her a question about another youngster on the train, police say.
The victim, who has not been identified but is aged 50, was riding a Queens-bound E Train on November 2 when the attack happened around 1.30pm.
Police say the attack started when her eight-year-old son asked why another child on the train was wearing a costume.
The aggressor can be seen slapping the other woman in the side of the head, before hitting her repeatedly in the head with her phone.
Police say another suspect, also an African American woman who can be seen in the video in a red hat and blue coat, then put the victim in a chokehold.
Both of them fled the train after the assault at the 71 Street-Continental Avenue station and are being hunted by officers.
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