They looked like any other Arab schoolgirls, and clearly didn't attract the suspicion of any passersby. But the two girls in the video above - caught on CCTV cameras in central Jerusalem - went on just moments later to carry out a stabbing attack next to the Mahane Yehuda Market.

The girls stabbed a 70-year-old man - a Palestinian Arab from Bethlehem they apparently mistook for a Jew - before being shot by security guards. Another man was accidentally shot in the hand as he attempted to intervene to stop the terrorists at the same time as the guards. 

Previous footage showed the vicious attack itself, but in a sense the latest footage is perhaps more disturbing than the explicit violence of the first. In it, the two girls can be seen walking around, talking animatedly, and repeatedly reaching for something in their pockets or sleeves.

After walking around, waiting to select a victim at the perfect time, the pair can be seen making their way to Mahane Yehuda, where they would carry out their attack.

What can't be seen are their murder weapons: two pairs of scissors, which they used to stab their victim repeatedly in the head and upper body.

They were quickly dispatched by alert security guards, who killed one of the terrorists and left the other seriously injured.