Joel Henry Hinrichs III, the OU student who blew himself up outside a packed football stadium on Oct. 1, 2005, was apparently not the only one in his family with violent tendencies. From the Nov. 23, 2006, Colorado Springs Gazette:

Thomas Carlisle Hinrichs, a 25-year-old Pikes Peak Community College student, says he thinks federal officers have harassed him since the Oct. 1, 2005, suicide of his brother, Joel, according to court documents.

He allegedly considered waiting at the FBI office to ambush an agent and also thought about killing his father and high school principal.

Hinrichs was arrested Nov. 15 at Pikes Peak Community College's Rampart Range campus with a Romanian-made assault rifle, bulletproof vest, military helmet, hunting knife and ammunition in the trunk of his car, according to Colorado Springs police.

The arrest came after his father, Joel Henry Hinrichs Jr., told police that Thomas had assaulted him and that he feared his son, whose mental health had deteriorated in the past year, would kill him.

This is not a new story, but I don't remember reading about it at the time. Big hat tip to Tulsa Chiggers for catching it.