Fanatical Samantha Lewthwaite, dubbed the 'White Widow', is a key member of al-Shabaab, the militant group that has claimed responsibility for the massacre.
According to the Mirror, Lewthwaite is an Islam convert whose husband was one of the suicide bombers in the 7/7 attacks on London.
It is reportedly said that the 29-year-old could even be among the masked gun gang still under siege in the Westgate mall, the report said.
In a Twitter message al-Shabaab praised the 'White Widow' and boasted that she was with them.
The attack has left at least 175 seriously injured, including children as young as two.
It began at about 1pm on Saturday when some 15 heavily armed men entered the complex and opened fire as they chanted jihad slogans, the report added.
--ANI (Posted on 23-09-2013)