Terrorist group Al-Shabaab have released a graphic video calling for attacks on shopping districts such as the UK's Oxford Street and Westfield, as well as major shopping centres in the United States and Canada.
The terrorist even supplied the GPS co-ordinates for the Westfield shopping centres in Stratford, East London and White City in West London.
"So hurry up and hasten to Heaven and do not hesitate"
The YouTube video, which lasted for 76 minutes, was fronted by a terrorist with a strong English accent.
Whilst shielding his face from the camera, he said: "We call upon our Muslim brothers, particularly those in the West, to answer the call of Allah and target disbelievers wherever they are.
"If just a handful of mujahedeen fighters can bring Kenya to a complete standstill for nearly a week, imagine what a dedicate mujahed in the West could do to American or Jewish owned shopping centres across the world?
"What if such an attack on the Mall of America in Minnesota or the West Edmonton mall in Canada or in London’s Oxford Street. Or any of the hundred or so of the Jewish owned Westfield shopping centres.
"Take the Westfield shopping centre in Stratford or White City for example, what would be the implications of such an attack, one can only imagine.
"All it takes is a man with firm determination, of which our Muslim ummah (community) has plenty of."
Finishing his speech, he added: "So hurry up and hasten to Heaven and do not hesitate."
The group wants its supporters to carry out an attack in the UK similar to the deadly 2013 shooting at the Westgate Mall in Kenya, Africa.
A total of 67 people died in the attack on the Kenyan shopping centre, which lasted over a number of days in September 2013, and many more were left with injuries.
While the terrorist video's authenticity has not been confirmed, officials have warned the general public to be 'particularly careful' when visiting the shopping locations listed in the footage.
Meanwhile a Scotland Yard spokeswoman said: “The MPS Counter Terrorism Command is aware of the video and is assessing the content.
“We remind the public that downloading extremist material may constitute an offence.”