A man accused of chewing off the ear of a 78-year-old man on a light-rail train platform near Portland, Oregon, told detectives he thought the victim was a robot trying to kill him, police said.

Koryn Kraemer, 25, pleaded not guilty in court Wednesday after allegedly chewing off a 78-year-old man's ear and part of his face because he thought the victim was a "robot." ...

A man accused of chewing off the ear of a 78-year-old man on a light-rail train platform near Portland, Oregon, told detectives he thought the victim was a robot trying to kill him, police said.

A man accused of chewing off the ear of a 78-year-old man on a light-rail train platform near Portland, Oregon, told detectives he thought the victim was a robot trying to kill him, police said.

A man accused of chewing off the ear of a 78-year-old man on a light-rail train platform near Portland, Oregon, told detectives he thought the victim was a robot trying to kill him, police said.

A man accused of chewing off the ear of a 78-year-old man on a light-rail train platform near Portland, Oregon, told detectives he thought the victim was a robot trying to kill him, police said.