Apparently the occult played a part in his life:
Hidden within a camouflage tent behind Jared Lee Loughner's home sits an alarming altar with a skull sitting atop a pot filled with shriveled oranges.
A row of ceremonial candles and a bag of potting soil lay nearby, photos reveal.
Experts on Sunday said the elements are featured in the ceremonies of a number of occult groups.
Investigators have focused on Loughner's online anti-government ramblings as the chief motivation for the shooting Saturday of U.S. Rep. Gabrielle Giffords (D-Ariz.).
The discovery of the shrine raises the possibility that Loughner, 22, may have been driven by other forces. Students and faculty at Pima Community College, which he attended until his suspension last summer, said Loughner was clearly at odds with the world.