Batman US cinema shooting: 12 dead in Colorado
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.