Jacob Sullivan was in a Bucks County court Friday.
He first entered a plea on Tuesday in the rape and killing of 14-year-old Grace Packer.
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However, before he could finalize it, Sullivan was rushed to the hospital with high blood pressure.
Investigators say he and his then-girlfriend Sara Packer raped and killed the teen back in 2016.
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Remembering 14-year-old Grace Packer