TAOS, N.M. (KRQE) – A Taos Middle School cross country runner that was stabbed by a campus intruder is now in stable condition. The eighth grader was running laps at Taos High School Monday afternoon, where he runs on the JV team.

The suspect, 27-year-old Brandon McMillan, was in court Tuesday. He didn’t say much to the judge, and investigators say the attack appears to be random.

Court documents explain how the attack unfolded. It says he was running laps around the high school and sat down on a bench to cool off. New Mexico State Police say McMillan arrived on campus telling a teacher he was there to pick up his son.

When the teacher turned away to contact the track coach, police say McMillan approached the student claiming he was his father. The student then told McMillan, “you’re not my dad” before he was stabbed in the neck.

The student took off running towards the football field, eventually making his way into a blue SUV. However, McMillan caught up to him and stabbed him in the stomach.

A parent and a teacher detained McMillan until police arrived. McMillan is from Michigan. He told a judge Tuesday he moved to Taos about five months ago. The judge asked him why he did what he did, and all McMillan said was “it’s a long story.”

Earlier this year McMillan lived near Pueblo, Colorado. He has a warrant out for his arrest on car theft, burglar and child abuse charges from his time there. McMillan also has a warrant out for his arrest in Texas for breaking into a car eight years ago.