Massachusetts woman arrested in road rage incident that injured boy, 2

Emma Silva, 20, of Marstons Mill, Mass., was charged with assaulting a child with a dangerous weapon

Massachusetts police arrested a woman they said threw a cup of iced coffee at a sleeping 2-year-old boy in a road rage incident.

Emma Silva, 20, of Marstons Mill, Mass., was charged with assaulting a child with a dangerous weapon and negligent operation of a vehicle.

Barnstable police said the boy's mother reported the road rage incident, which happened Wednesday afternoon on Cape Cod.

 Mugshot for Emma Silva, 20. (Barnstable Police Department)

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They said she told police "another woman operating a white Jeep Liberty was 'riding her bumper' and 'laying on her horn' while yelling at her."

She said the suspect "threw a cup of iced coffee into her vehicle, striking her sleeping 2- year-old son in the face while he was seated in the rear of her car in his child safety seat," police said.

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The cup bloodied the boy's face and nose, according to police.

Police said a short time later an officer made contact with Silva and she agreed to come to the police station. She was arrested after the boy's mother identified her.

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Silva was arraigned in Barnstable District Court Thursday morning, and released on $540 bail and is due back in court on Nov. 4.

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