Are they all related to Hamsup??
yes, you're korect - all of them used to play hantam bola and kuti kuti in Hamsup's kampung ages ago. He also had an abang called Hamsum - good looking chap.
On another note, looking at the pic one can see that the fella's right hand is in front of the cop and left hand just above the other cop's walkie, so diff for any snatch of the revolver plus other cops also just behind. Of course, cable-tie wud have been a better option.