Aurora, CO (CNN) - Background checks for those wanting to buy guns in Colorado jumped more than 40-percent in the wake of last week's movie theater shooting.
Data from the Colorado Bureau of Investigation shows nearly 2,900 people were approved to buy firearms from Friday through Sunday.
That's a 43 percent increase over the previous weekend, but, we don't know how many guns were actually sold.
Background checks are required in Colorado before anyone can buy a firearm at a store or gun show.
Officials did not offer an explanation on why more people applied to buy guns.
Spikes were also seen after other recent mass shootings: the 2007 incident at Virginia Tech and last year's attempted assassination of Arizona Representative Gabrielle Giffords.