She was getting rigged out in her suicide bomb outfit at her Safe House when a text message came in. It appears the trigger for her bomb was set up to act upon receipt of a text message.
Security sources believe a message from her mobile phone operator wishing her a happy new year received just hours before the planned attack triggered her suicide belt, killing her at a safe house.Bad luck. Well, actually, good luck for almost all of Moscow, including tourists, but bad luck for the woman bomber.
Note that the suicide bomber was a woman. Looking for terrorists has to include looking at both sexes (or is that both genders?).
Regards — Cliff