Police arrested a suspect Monday in the brazen Manhattan killing of UnitedHealthcare's CEO after a quick-thinking McDonald’s employee in Pennsylvania alerted authorities to a customer who was found with a weapon, mask and writings linking him to the ambush. The chance sighting at the restaurant in Altoona led to a dramatic break in a challenging but fast-moving investigation that had captivated the public in the five days since the shooting that shook the health insurance industry. Read more at: https://www.9news.com/article/news/nation-world/hunt-for-unitedhealthcare-ceo-killer-continues/507-97759326-3bb4-48e3-8c73-3759dfdc9930 More local videos here: https://youtube.com/@9news Subscribe to NEXT: https://youtube.com/@Nexton9NEWS Stay connected: 9NEWS Website: https://www.9news.com/ Facebook: https://www.facebook.com/ilike9news Twitter: https://twitter.com/9NEWS Instagram: https://www.instagram.com/9newsdenver/ Download the 9NEWS App: https://www.9news.com/appredirect/ Sign up for the 9NEWSLETTER: https://www.9news.com/email 9NEWS (KUSA) is located in Denver, Colorado.