The international police agency Interpol has issued a high-priority \"red notice\" for British terror suspect Samantha Lewthwaite at the request of Kenyan authorities, the Agency said Thursday. Lewthwaite, known as \"the white widow\" and who also uses the name Natalie Webb, is being sought for terrorist activity in Kenya in 2011 but there was also initial suspicion of her involvement in the attack earlier this week against a Nairobi mall where at least 70 people died. Many of the dead were executed by terrorists claiming to be \"Al Shabab\" militants from Somalia. The \"red notice\" is the highest alert to Interpol\'s 190 member countries and constitutes a request for immediate and urgent arrest, pending extradition. Interpol is based in Lyon in eastern France and it said that the so-called \"white widow\" Lewthwaite was married to one of the terrorists that took part in the London subway bombings in 2005, when 52 people died in several attacks.