The
militants who led the attack on a Kenyan mall hired a shop there in the
weeks leading up to the siege, senior security sources have told the
BBC.
This gave them access to service lifts at Westgate enabling them to stockpile weapons and ammunition. Having pre-positioned weapons they were able to re-arm quickly and repel the security forces.
Sixty-seven people are known to have died in the four-day siege. Kenya's Red Cross says 61 others are still missing.
Forensic experts are still combing the complex, looking for bodies and clues.
Analysis
That extremist gunmen could secure a base within the mall in the weeks leading up to the attack and pre-position weapons is in itself astonishing. But for many Kenyans, audacious as it is, it will come as little surprise when bribery remains the currency of everyday life.
A few "bob" - (Kenya shillings) to "look the other way" is not unusual here, despite the best efforts of many brave Kenyans to rein the problem in. Porous borders and a ready supply of weapons have long fuelled the threat of violence in Kenya - an AK-47 costs just $450 (£280) today if you know the right people.
Many Kenyans now hope the legacy of Westgate will be tougher action to tackle dodgy deals. The human cost of not doing so has already been laid bare.
The Somali Islamist group
al-Shabab, which is part of al-Qaeda, says it was behind the attack and
the following siege at the upmarket mall in the Kenyan capital, Nairobi.
Fake IDs?
The BBC investigation has revealed how the Westgate gunmen were able to plan and carry out the siege, and how security breaches allegedly fuelled by corruption made it an attack waiting to happen.
To rent a shop, the militants would have needed fake IDs supplied by corrupt government officials.
The BBC has also confirmed more details about how they executed their attack.
Two vehicles dropped the Islamist extremists off outside before they forced their way into the mall, sources say.
They are also believed to have set up a base using a ventilation shaft as a hiding place, on the first floor.
Security sources have also confirmed a change of tack by the militants late on Saturday.
They rolled out heavy calibre machine guns, exploiting the moment when control of the security operation switched from the police to the military.
There are reports that this switchover was fraught with confusion.
New photos revealing some of the damage at the Westgate shopping centre have been released.
They show how parts of the rooftop car park have collapsed down onto what is believed to be the supermarket area.
The manager of a jewellery shop allowed
back into Westgate showed the BBC photos she took, showing that the
store had been looted.
President Uhuru Kenyatta declared three
days of official mourning this week. The funeral of his nephew and his
nephew's fiancee took place in Nairobi on Friday.
Amongst the funerals held on Thursday was
that of Mitul Shah at the Hindu Crematorium. A marketing executive, his
firm was reportedly sponsoring the children's cooking competition
taking place in the car park.
The committee's chairman, Ndung'u Gethenji, told the BBC that "people need to know the exact lapses in the security system that possibly allowed this event to take place".
He also said they needed to understand "the anatomy of the entire rescue operation" amid the allegations of confusion over who was in charge.
It is still not clear how many militants took place in the attack or their nationalities.
But senior sources within al-Shabab, which has repeatedly threatened attacks on Kenyan soil if Nairobi did not pull its troops out of Somalia, told the BBC by phone that they would not release the attackers' names.
'Jewellery looted'
Irene Anyango: "It's not the mall you used to see"
“Start Quote
Some of them were lying down as if they were dead. They would hear us calling out to help them, but they wouldn't move. I think they were so petrified they couldn't get up - we had to urge people to open the doors to the shops.”
The official, who did not want to
be named, said autopsies would show whether this had killed the
hostages or whether they had already been murdered.
Correspondents say there have been reports that the military
had blown out a supporting column to bring the siege to an end - a
controversial decision which, if confirmed, would raise the possibility
that hostages' lives were seen as expendable. Irene Anyango, manager of a Westgate jewellery shop, is one of the few people who has been allowed into the mall following the end of the siege.
"It was a nightmare… and the shop was a totally different place," she told the BBC.
Ms Anyango said 90% of the jewellery was missing from the shop, which is now flooded.
"As far as we know, for the last couple of days they were intact - we don't understand what's happening but they're not there," she said.
Many people not only face the trauma of losing family and colleagues but also the possibility of losing their jobs, she added.
On Friday morning, President Uhuru Kenyatta attended the funeral of his nephew and his nephew's fiancee at a church service Nairobi, where he addressed the congregation.
Mbugua Mwangi and Rosemary Wahito were among those killed in the mall on Saturday.
About 4,000 Kenyan troops have been sent to Somalia to help pro-government forces battle al-Shabab.
The group is banned as a terrorist group by both the US and the UK and is believed to have between 7,000 and 9,000 fighters.
Its members are fighting to create an Islamic state in Somalia.
SOURCE: BBC
