Anna Kepner’s stepbrother was ‘obsessed’ with slain cheerleader — and once committed creepy act while she was sleeping: report

Anna Kepner’s younger stepbrother – a “suspect” in her killing – had a twisted 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 blended family, Steven Westin told “Inside Edition.”

“She was scared of him because he always carried around a big knife,” the alarmed father told the outlet, which posted a teaser Thursday night ahead of the bombshell interview.

Westin said his son, Joshua, who dated Kepner, once “saw her stepbrother come into the room when she was sleeping and get on top of her.”

“He’s infatuated, attracted to her like crazy. He always wanted to date her,” Westin said of the suspected warped stepsibling.

Westin said his son tried to warn Kepner’s parents but they “didn’t want to believe me.”

Kepner died onboard the Carnival Horizon cruise ship at 11:17 a.m. on Friday, Nov. 7, according to the Miami-Dade Medical Examiner.

Her body was found stuffed under her bed in her cabin covered in life vests, sources told the Mail Online.

She had gone on the six-day cruise with her father, her stepmother, her 14-year-old brother and 16-year-old stepbrother.

The FBI is now questioning Kepner’s stepbrother, according to court documents filed by her stepmother, Shauntel Hudson.

The slain high school senior was set to graduate in Spring from Temple Christian School in Titusville, Florida, after earlier attending Titusville High School, where she was a member of the varsity cheer team.