He had previously purchased a firearm of the same model, unregistered with the installation, on February 23, although he reported it stolen on March 1, the same day he bought a replacement.
2月23日，他曾购买了与作案时使用的同型号枪支并未被部队登记，然而3月1日他报告枪支被偷，并在当天买了一支新的。