US attorney general Eric Holder says the number of mass shooting incidents in the country has tripled in recent years. Holder made the remarks at the annual conference of the International Association of Chiefs of Police in the US city of Chicago. He also said between 2000 and 2008, the country experienced an average of five mass shootings every year. But since then, the annual average of mass shooting incidents has tripled. Holder also said the country has witnessed at least 12 mass shootings this year. The US has one of the highest rates of gun-related crimes in the world. Reports say over 9-thousand people lost their lives in gun crimes since the deadly Newtown shooting incident back in 2012. Show Less >>