Pine Ridge police arrested a man Friday morning at the Red Cloud Indian School after he reportedly made a video threatening the school. The Oglala Sioux Tribe police have not released the man’s name and have not said if he had any weapons with him when he was arrested at the school. According to an OST police release, the man made a donation to the school and for some reason then posted a video threat on YouTube. In the video, which we have not been able to locate, he allegedly had a machete and other weapons. The students, OST police say, were not in any danger. The OST police, Bureau of Indian Affairs and FBI are investigating the incident.