Today in True Crime History: September 14

Photo by Pankaj Bhargava from Burst

1807 — Aaron Burr is acquitted of charges related to treason. He had previously shot Alexander Hamilton in a duel three years earlier. He was not tried for this charge, but it did seemingly end his career as a politician.

1972 — Aiko Koo, 15, is picked up and murdered by Edmund Kemper.

1983 — San Jacinto, Texas, county sheriff James Parker, also known as “Humpy,” is convicted of violating the rights of inmates and of torture.

1993 — Richard Kenneth Djerf kills four members of a friend’s family. He claimed that the murder was a retaliation for the friend stealing electronics and a gun from Djerf’s home. Djerf is currently on death row in Florence, Arizona.