as a teenager she married jermaine lindsey. she was pregnant when he blew himself up in the london bus and train attacks that killed more than 50 people. it is not clear if that event radicalized her. she initially condemned those bombings. >> reporter: but subsequently she is thought to have traveled to east africa and connected with militants linked to the group al shabab. >> reporter: she has been elusive, known to travel on a fake south african passport under the name natalie webb. in 2011, kenyan authorities raided three home in moom bassa including one used by lewthwaite. there she found similar bomb material to those used in the london bombings. they arrested people for plotting to bomb tourist areas but they were too late to catch samantha lewthwaite. do those pieces up up to the potential involvement? the analyst peter bergen doesn't think so. >> that doesn't fit with how these groups operate.