The gunman who shot and killed 49 people in a June attack on Orlando’s Pulse nightclub likely abused steroids, law-enforcement officials tell the Los Angeles Times. Omar Mateen’s autopsy reported determined the 29-year-old shooter was HIV-negative, and that his body showed signs of long-term steroid use. While steroids can lead to an increase in aggressive behavior, officials are uncertain whether they contributed to Mateen’s mass shooting.
