A man has been arrested for beheading his mother because he thought she was a clone.

According to Police in Sun Prairie, Wisconsin, the 40-year-old man identified as Matthew Skalitzky was arrested after investigations proved he murdered his mother Jane Skalitzky  at his home.

Investigations revealed he and his mother stopped by his house to pick up some mail when Matthew went crazy and hacked off his mother’s head with a sword.

Matthew’s former roommate heard the commotion then ran upstairs to see him holding a bloody sword and his mother lying lifeless on the floor.

The roommate took Matthew downstairs and called police.

Matthew told the officers that the woman was not his real mother that’s why he murdered her.

He has since been booked into jail, and his bail set at $1 million.