A Florida sheriff says a gunman who killed a woman before being fatally shot by a security guard at Citibank’s sprawling office complex in Tampa targeted the campus because he was angry over a $2,500 debt collection. Hillsborough County Sheriff Chad Chronister said Thursday that about three hours before the shooting, 35-year-old Jacob Pearson called an attorney affiliated with Citibank and threatened violence if a court hearing over the debt wasn’t canceled. Chronister says Pearson drove from his home in Orlando to Tampa, crashed his car through a fence at Citibank’s campus and plowed into a courtyard. The sheriff said Pearson shot the first employee he saw.