At least one Kenyan soldier has been arrested after being caught with a bloody wallet amid the widespread looting of the Westgate Mall following the terrorist attack, The New York Times reports.
There has reportedly been widespread dismay among Kenyans in Nairobi that security services would exploit a national tragedy in such a way.
Local people say that the gunfire that rang out for days was directed not at the last of the militants but at the safes and padlocks of the many businesses inside the complex, according to the New York Times.
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Guillier conceded a "severe defeat" defeat to his supporters as the result came in.
The outage struck Hartfield-Jackson Atlanta International Airport at around 1pm local time, stopping all outgoing flights.
It will be a chilly day for many parts with the highest temperatures, about 10 Celsius (50F) in the far northwest.