CCTV shows woman in burqa lay in wait for American mother, 37, for an hour and half before stabbing her and leaving her dying in pool of blood at mall in Abu Dhabi - then calmly walked off

Dramatic footage of the scene of the murder of a 37-year-old American mother in a mall in Abu Dhabi was revealed by police today. It shows how the suspect - who wore a burqa - waited for an hour and a half in the toilets before the killing.
Detectives released the image of the suspect heading towards the toilets (main) then leaving an hour and a half later as the horror merged. Last seen leaving for the parking garage (bottom right), the murderer left behind a pool of blood and the knife (top right) used to kill the mother of twins, who has not been named.