Authorities say 37-year-old Brian Perez sent unwanted messages and videos on social media to Bella Hadid starting in December.
The 21-year-old Hadid also told police she had seen Perez standing outside her Tribeca home.
He was arrested after her security spotted him in the vicinity of her building around 9:30 p.m. Thursday.
They followed him and called police.
He was charged with aggravated harassment and stalking.
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