Police search for clues at California shooters home.

USPA NEWS - Police are searching for clues as it relates to the shooting at the Borderline Bar and Grill in Thousand Oaks California.

Authorities are investigating the tragic event that happened at a Thousand Oaks bar in California.I.Long the alleged shooter and former U.S. marine has alleged to have killed at least 12 people.The F.B.I in conjunction with local authorities are searching the home of the alleged shooter to try to understand what led up to this tragic event. Some are implying that the former veteran was suffering from some form of mental illness.Long the alleged shooter used a .45 caliber hand gun during the shooting.It is alleged that Long patranized the Borderline Bar & Grill from time to time.Multiple media reports confirm that the alleged shooter died from a self inflicted gun wound.The semi automatic handgun had a extended stock.Its alleged that Long shot the security guard working at the Borderline Bar first so he could get to the other patrons without incident. Paul Viollis a veteran security analyst that appeared on CBSN implies that the incident was premeditated.
He also thinks Long could be suffering from Post traumatic stress disorder. Eyewitnesses said the alleged shooter shot the cashier then went on a rampage and started shooting everybody. Thousand Oaks California is in mourning .