UMSL criminologist David Klinger discusses Boston bombings with KTVI (Channel 2). (Photo by August Jennewein)

As investigators continue to piece together information and evidence from Monday’s tragic Boston Marathon bombings, officials have discovered that Anti-Personnel Improvised Explosive Devices were used. These devices are easy to make and can cause serious damage.

David Klinger, associate professor of criminology and criminal justice at the University of Missouri–St. Louis, spoke about the bombings with reporter Charles Jaco from KTVI (Channel 2).

“If it’s on the ground what’s going to happen is those munitions are going to go down and skip up about eight inches to 12 inches,” Klinger told KTVI. “That’s probably why we had all these traumatic amputations and your lower leg injuries.”

View the full video on the KTVI website.

Klinger was also interviewed about the Boston bombings on KPLR (Channel 11).