A Wisconsin man who was arrested Friday afternoon is suspected of beheading his mother with a four-foot sword. Matthew Skalitzky, 40, had stopped taking prescription medication when he read the negative side effects, said his father Joseph Skalitzky, according to CBS Chicago. He had just started taking them again, a few days prior to the beheading.

Jane Skalitzky had driven her son home after he had stayed the night with her and her husband and had breakfast the following morning. Matthew Skalitzky's roommate claimed that Jane was "being friendly and greeting him" while Matthew seemed "distant and unemotional."

After Jane and Matthew went upstairs, the roommate heard some stomping and then Jane screaming "no, no, no." When the roommate went up to investigate, he found Skalitzky standing over his mother's body, holding the bloody sword, The Chicago Tribune reported.

When the police responded to the roommate's 911 call, they found the bloody sword on the porch and arrested Skalitzky with no incident. He confessed, and when policed asked him if his mother was dead, he replied: "Yes, but she's not my real mother," according to The New York Daily News.

Jane was a retired special education teacher in the Sun Prairie School District, where she taught for 30 years.