Reporter: Did the suspect act alone? Wray: This is very much an active & ongoing investigation.

Reporter: Did the suspect act alone?
Wray: This is very much an active & ongoing investigation. We do believe we've caught the right guy, but we also know that there is an ongoing investigation, there still work to be done, & plenty of unanswered questions https://t.co/WxeFZeqKEn pic.twitter.com/bNypH6f07M

— CBS News (@CBSNews) October 26, 2018

Source: Twitter