Published Tuesday, 24 September 2013
People pictured looking on during the attack. (© Getty)
More than 70 people died after al Qaida-linked militants laid siege to the Westgate centre at Nairobi, including 61 civilians, six security forces and five terrorists.
It is believed there are at least six British nationals among the dead, while a further 62 people are injured in hospital and 11 are being held in custody.
Announcing three days of national mourning, Kenyan President Uhuru Kenyatta confirmed in a televised address on Tuesday evening those responsible have now been "defeated".
He further revealed that intelligence reports had been received suggesting that a British woman and "two or three" American nationals had been involved in the attack.
We cannot confirm the details at present but forensic experts are working to ascertain the nationalities of the terrorists
President Uhuru Kenyatta
The president continued: "I promise that we shall have full accountability for the mindless destruction, deaths, pain, loss and suffering we have all undergone as a national family. These cowards will meet justice, as will their accomplices, wherever they are."
There is much speculation that the woman behind the plot is Samantha Lewthwaite, who was born in Banbridge in Co Down. She then moved to England and later converted to Islam.
Kenya's foreign minister, Amina Mohamed, previously told the PBS NewsHour programme: "From the information that we have, two or three Americans (were involved) and I think, so far, I have heard of one Brit ... a woman ... and I think she has done this many times before."
However, Raffaello Pantucci, a senior research fellow at the Royal United Services Institute, said there was no concrete evidence that the "white widow" was involved in the incident.
"But the fact of her being mentioned in this context is not surprising because of her connections, and it is known that she is somewhere in East Africa," he added.
Lewthwaite is already wanted by Kenyan police over alleged links to a terrorist cell that planned bomb attacks on the country's coast. The al Qaeda-linked Somali militant group took hostages and opened fire at the Westgate complex on Saturday.
It is thought that up to 15 insurgents stormed the building in a grenade and gun attack.
Eight-year-old Jennah Bawa was one of the Britons killed along with 33-year-old architect Ross Langdon and his pregnant Dutch girlfriend Elif Yavuz.
A Foreign and Commonwealth Office spokesperson has said: "We are aware of the Foreign Minister's comment. We continue to liaise very closely with the Kenyan authorities and to support their investigation into this attack. The UK will do everything it can to support the Kenyans bringing everyone responsible for this barbaric attack to justice."
© UTV News