A 17-year-old Indiana boy who fantasized about committing murder has been accused of strangling his 10-year-old brother and then dumping the body in a park after visiting his girlfriend to give her a sweetheart ring.

Rising Sun, Indiana resident Andrew Conley has been charged as an adult with killing his brother, Conner, by strangling him for 20 minutes.

The AP reports that the teenager told authorities that he has had fantasies about killing someone since he was in the eighth grade and that strangling his little brother made him feel “just like” the serial killer Dexter on a Showtime television series.

He later revealed that killing his brother was like “when people have something like they are hungry and there is a hamburger sitting there and they knew they had to have it.”

After killing his brother, Andrew is said to have wrapped his head in plastic, tied it with electrical tape and put the body in his trunk. He then visited his girlfriend to give her a sweetheart ring before dumping the body.

His brother’s last words were: “Andrew, stop.”

Prosecutor Aaron Negangard described Andrew as an” evil child.”