after he allegedly stabbed his 14-year-old girlfriend to death in Minnesota. Isaac Arthur Arndt, 18, allegedly hugged his girlfriend Jaelyn Walker after he had already in the town of Moorhead, near the North Dakota border. According to a probable cause statement filed in court, Arndt walked into the Clay County Law Enforcement Center on the night of Aug.
19 at round 11 p.m. He said he was there to report an assault but officers noticed two cuts on his finger.
Arndt claimed that he and Walker were in Gooseberry park when an “unknown white male” started to follow them. Arndt claimed when he ran away the man started to 90 minutes after Arndt made his statement to police, Walker’s mother called the Moorhead Police Department to file a missing persons report. Police used her Snapchat map to locate her phone which led them to a bicycle trail near Elm Street and 6th Avenue South.
They eventually located Walker's body near a river near a wooded area along the trail. Police discovered she was suffering from multiple stab wounds and found a knife and a lot of blood near her body. Moorhead detectives then went to the hospital where Arndt was being treated for his wounds.
Police advised Arndt of his rights and questioned him further on his story of the man chasing him and Walker through the park. Detectives noted several inconsistencies in his story leading Arndt to eventually admit that he and Walker had been in a romantic relationship for several months which had recently ended. .