The main suspect in the Maine mass shooting, Robert Card, has been found dead, ending a 48-hour manhunt. He was suspected of killing 18 and injuring 13 people in a shooting spree at a bowling alley and bar. Card, a US Army reservist with mental health issues, died from a self-inflicted gunshot wound. This marks the 36th mass killing in the United States this year according to AP and USA Today data maintained in partnership with Northeastern University.