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NEW YORK (AP) - A man has been arrested in a knife attack that killed a 6-year-old boy and critically injured a 7-year-old girl in a New York City public housing building that didn't have security cameras.

Police say 27-year-old Daniel St. Hubert was arrested Wednesday night. He's in custody and can't be contacted for comment.

Police say Prince Joshua Avitto and his friend Mikayla Capers were riding in an elevator in Brooklyn's Boulevard Houses to get ice cream Sunday when they were randomly attacked. Chicago Bulls power forward Taj Gibson says Prince was his cousin.

Police say the attacker used a steak knife to stab each child multiple times. They say they're investigating whether he also may have fatally stabbed a teenager days earlier a few blocks away.

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