How a phone app triggered an international manhunt for the killer of a U.S. college student

Roommates of Binghamton University nursing student Haley Anderson became concerned over her whereabouts due to her silence on social media in 2018. They soon got some answers using a smartphone app, which then triggered investigators to pursue an international manhunt stretching to Nicaragua. CBS News contributor Maria Elena Salinas joined CBSN to preview this week’s episode of “48 Hours.” Source