A 19-year-old man is accused of murdering his grandmother after he allegedly stabbed her nearly 100 times, struck her in the face with a wrench, and shot the elderly woman in the head with a crossbow.
Police in Florida arrested Jasper Aristotle Smiddie at approximately 11 a.m. on Wednesday, one day after the teenager confessed the brutal killing to his father by telling him that he "did something stupid," according to an arrest affidavit obtained by the Huffington Post.
During the phone conversation, Smiddie explained that he "blacked out and woke up 2 hours later with blood all over his hands and his grandmother," the affidavit says.
The suspect's father reported his son to police on Tuesday following the confession, allowing authorities to find the young man the next day, according to NBC Miami.
Police discovered the grandmother -- 67-year-old Gloria Helfrich -- in her bedroom, where Smiddie left her behind a locked door.
Investigators believe that Smiddie killed his grandmother so that his uncle -- who he hated and originally plotted to kill -- would suffer seeing his mother dead, according to FoxNews.
"He decided, 'Well, I'll kill my grandmother instead so that my uncle has to live with the death of his mother for the rest of his life,'" Sheriff Grady Judd of the Polk County Sheriff's Department said, according to Fox.
It remains unclear why the suspect hated his uncle.