Sniper Who Killed 5 Dallas Police Officers Acted Alone, Authorities Say
11 photos
Dallas Police Chief David Brown pauses at a prayer vigil <br>
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Flowers and notes cover a Dallas police cruiser<br>
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Flags are at half mast outside Dallas City Hall <br>
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Investigation<br>
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At a prayer vigil<br>
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Micah Johnson's residence in Mesquite, a suburb of Dallas<br>
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Homeland Secretary Jeh Johnson, with NYC Mayor Bill de Blasio and NYPD Commissioner Bill Bratton, discussing the shootings<br>
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A man with "Police Lives Matter" shirts in Dallas<br>
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A person writes a note to put on a Dallas PD cruiser<br>
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Girls bring flowers to a Dallas PD cruiser outside police headquarters<br>
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At the prayer vigil in Dallas<br>
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