Batman US cinema shooting: 12 dead in Colorado

20 July 2012 Last updated at 17:39 ET Help

At least 12 people have been killed and 59 wounded in a shooting at a midnight cinema showing of the new Batman film near Denver, Colorado.

Witnesses said a man wearing a gas mask opened fire after tossing a tear gas canister in the auditorium as movie-goers watched The Dark Knight Rises.

A 24-year-old former neuroscience student was arrested in a car park outside the theatre in Aurora city.

Alistair Leithead reports.

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