Colorado residents are flocking to buy weapons since last week's mass shooting in Aurora, according to official figures.
Applications for background checks needed to buy a gun were up 43% on the previous week, following the death of 12 people.
James Holmes was arrested following the shooting, which took place at a late night screening of the new Batman film, The Dark Knight Rises.
The Colorado Bureau of Investigations said 880 people applied for the checks on the Friday before the shooting.
On the day following the massacre (19 July), 1,216 people applied for a license. A day later (20 July) 1,243 applied.
More than 2,800 people were approved to buy a gun over the weekend, although the figures cannot confirm how many actually did so.
A similar spike in applications was recorded in 2007 after the Virginia Tech shootings, the Denver Post reported.
More than 50 people were injured in the Aurora shooting. Twenty still remains in hospital.
Holmes legally purchased his guns, gas canisters and thousands of rounds of ammunition, according to prosecutors. The suspect booby-trapped his apartment with explosives, which were deactivated by police after the day after the massacre.
Holmes appeared in court on Monday and is due to be charged next week.
This week, an image went viral, suggesting that guns are easier to buy than French cheese due to restrictions dairy products made with raw milk.