According to the recounts of victims, the man usually attacks after a distraction such as clothes falling off a rack. Afterwards, the attacker calmly walks away without drawing attention to himself.
Huffington Post Reports:
A few days ago, an 18-year-old woman was shopping at Forever 21 in Fairfax, Virginia when she felt a sharp pain on her rear end, report from NBC Washington. She told police she thought at first that she had been struck with a clothes hanger. Only after further inspection did she realize she had been cut through her shorts with a box cutter or razor.