LOGAN, Iowa (AP) – An 18-year-old from western Iowa has testified that while in his fantasy world, he killed a goblin. But Cody Metzker-Madsen said he didn’t realize until later he’d actually killed his 5-year-old foster brother.  Metzker-Madsen testified Wednesday he visits a different world whenever he plays a game with someone and that only he can visit those worlds. His lawyer is using an insanity defense to combat the murder charge in Harrison County District Court in Logan.

Authorities say Dominic Elkins, of Atlantic, was killed last year while the boys were playing outdoors at their home near Logan. An autopsy said Elkins, whose body was found at the bottom of a ravine, died as a result of blunt-force head injuries and drowning. Metzker-Madsen was 17 at the time.