Terrorist or security?

On a visit to Jusco in JB,spotted this guy walking around...with an assault rifle!!
Something is definitely wrong here...he wasn't uniformed,no form of identity,not even a security pass etc,yet carrying his rifle like a walking stick walking ya-ya around the mall!On first sight,I thought he is a terrorist!
Must applaud the Malaysian 'garment' for their efforts to make the 'cops' looked like a 'family'... with the 'criminals'.