This undated photo provided by the Lafayette Police Department shows John Russel Houser, in Lafayette, La. Authorities have identified Houser as the gunman who opened fire in a movie theater on Thursday, July 23, 2015, in Lafayette.

3 Dead, 9 Injured In Latest American Mass Shooting

The Louisiana shooting occurred three years after James Holmes entered a crowded movie theater in suburban Denver and opened fire during the premier of a Batman film, killing 12 people and wounding 70 others.

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