A robber shot dead three employees of a private security firm and
wounded another one in Karavan shopping mall in Kyiv on Wednesday
afternoon, Interfax-Ukraine learnt at Kyiv police department.

According to preliminary information, one of the security guards saw a
visitor stealing a USB flash drive from a glass case. The guard asked
the man to go to the back room, where other guards were waiting.

In the room the man pulled out a gun and started shooting, killing three
security guards on the spot and seriously wounding the fourth one. The
attacker then fled the scene.

http://www.kyivpost.com/content/kyiv/police-identify-suspect-in-killing-security-guards-in-kyivs-karavan-313543.html