CAPE CANAVERAL, Fla. -- A Brevard County teenager is in jail for a bizarre crime. He is charged with kidnapping, torturing and trying to murder another teen.

Seventeen-year-old Joshua Fore's girlfriend, 14, lives at a home in Cape Canaveral. That's where the attack took place Tuesday evening. The girl's mom wasn't home at the time. The attack against the unnamed victim started in the bathroom and then escalated inside the garage.

"The whole time, the victim was pleading and begging to be let go and not be set on fire or electrocuted," explained agent Jackie Hearon.

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Deputies arrested 17-year-old Joshua Fore and accused him of threatening to kill one of his friends, who is also 17.

"The victim is mentally delayed in his development and, according to his father, appears to be more like 12," Hearon said.

According to the young victim, Fore struck him several times in the head with brass knuckles and then sprayed him with lighter fluid and tried to set him on fire.

"Then put water on the victim and had an electrical cord ... but never touched him with the cord," Hearon explained.

All this, investigators said, happened because Fore became enraged when the victim took a pair of underpants belonging to Fore's 14-year-old girlfriend. Now, Fore is facing attempted felony murder, robbery and false imprisonment charges.

"Suspect was victim's only friend and most trusted friend for four years," Hearon said. "They only had one previous argument that never resulted in any physical activity."

Fore appeared before a judge Wednesday morning. The judge sentenced him to 21 days in the juvenile detention center. Prosecutors will review the case to see if they need to try him as an adult. The trial is set for December 13.