Correspondent Whit Johnson reports on the shooting inside a lecture hall at Brown University that killed two and injured nine; Senior Justice Correspondent Pierre Thomas has the latest on the person of interest detained by authorities amid an ongoing investigation into the university shooting; Foreign Correspondent Marcus Moore reports on the father and son suspects in a mass shooting at Australia's iconic Bondi Beach targeting a Hanukkah celebration according to authorities; and more on ABC World News Tonight with David Muir.
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