July 20, 2012
James Holmes, 24 Aurora, CO
Purchased an assault rifle at a gun store in Colorado and more than 5,000 rounds online.
12 killed, 58 wounded
Dec. 14, 2012
Adam Lanza, 20 Newtown, CT
Used a traditional rifle and an AR-15, both of which were purchased legally by his mother.
27 killed, 2 wounded
June 7, 2013
John Zawahri, 23 Santa Monica
Bypassed state regulations by building his own AR-15 out of component parts he bought online.
5 killed, 2 wounded
July 16, 2015
Mohammod Youssef Abdulazeez, 24 Chattanooga, TN
Opened fire on two military centres with a weapon he bought online.
5 killed, 2 wounded
Oct. 1, 2015
Chris Harper-Mercer, 26 Roseburg, OR
Obtained weapons from family members and a licensed firearms dealer.
9 killed, 9 wounded…
