David Katz, a 24-year old opened fire at an e-sports tournament in Jacksonville, Florida, on Sunday wounding ten and killing two before taking his own life. According to family divorce records, Katz has been suffering from mental illness since the age of 12. Records show that Katz was seen by several psychiatrists and prescribed several medications for his mental health. Additional records also show 26 calls to the police department from 1993 to 2009, for issues ranging from “mental illness” to domestic disputes during Katz’s life. Despite his history, Katz was able to purchase a 9mm handgun and a .45-caliber handgun with a laser sight attachment. Interestingly. Katz was able to purchase the firearm even though federal law prohibits the purchase of such weapons if an individual has been committed to a mental health institution or deemed mentally unstable. To read more about the incident, click here.