Reading Stephen Tankel's book on Lashkar-e-Taiba (LeT) I found references to prior information being given to the US authorities on David Headley, he Pakistani-American, by his wives, to officials in the USA, August 2005 and Pakistan, in 2007. The DNI later ordered a review, result not known to Tankel.

The original source was ProPublica, an investigative journalism site:http://www.propublica.org/article/ne...meline-in-mumb

Note this article refers to three other sources, friends or relatives, giving information.

I shall leave aside the many issues that arise, notably intelligence management decision-making and the value of such information.

One caller never had an update to his call. I know from my experience feedback is vital and can generate additional calls.