Anna Kepner’s younger stepbrother — a “suspect” in her killing — had a creepy obsession with the Florida cheerleader and was once caught climbing on top of her while she slept, according to the father of the slain 18-year-old’s ex-boyfriend. Kepner’s 16-year-old stepbrother was “obsessed with her” and relentlessly pursued her despite their newly blended family, Steven Westin told “Inside Edition,” citing conversations he had with his son. “She was scared of him because he always carried around a big knife,” the alarmed father claimed to the outlet in an interview that aired Thursday.

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