NYPD investigation into Kenya's Westgate Mall terror attacks reveals the truth behind the massacre of more than 60 civilians

KENYA'S shopping mall massacre shook the world. Yet all it took was four terrorists with guns. Now, investigators say they all escaped.

It's a story of chaos, confusion - and corruption.

The New York Police Department has conducted its own in-depth analysis of the September attack which killed more than 60 at the Westgate Shopping Mall in Nairobi. It was an exercise designed to familiarise the often-targeted city's law enforcers with what to expect.

Their discoveries have debunked much of what Kenyan authorities claim, and painted a frightening picture of the power of a few angry men with guns.

And they doubt the terrorists died in the collapsing building.

"As a cop, I'm very sceptical of claims until I see proof," Lt. Detective Commander Kevin Yorke, who oversaw the report, said. He added that there is "a lot of doubt in my mind it is true."

Detective Yorke said it was only now a real picture was emerging from 'the fog of war'.

But the most startling component of the report is the dangerous incompetence shown by Kenya's military and police reaction.

Light attack ... The Kenyan mall attackers are believed to have been very lightly armed. A more determined and early police response may have prevented the high number of casualties.