 Those who knew Thomas Matthew Crooks describe him as a nerd. The FBI says it's already interviewed more than 100 people, and on Monday it announced it had gained access to his phone. Crooks' sudden worldwide notoriety has also put a spotlight on his hometown of Bethel Park, on the outskirts of Pittsburgh, Pennsylvania. A local councillor, Dan Grisbeck, told our correspondent Emma Vardy that it's common for people in Bethel Park to own guns. From there, she sent us this report.