http : //shoestring911.blogspot.co.uk/2012/12/dont-mention-this-to-anyone-why-did.html [ 52 ] the hijackers left a clear trail of evidence http : //www.historycommons.org/context.jsp ? item=a091101evidencetrail # a091101evidencetrail [ 53 ] the letter has been fabricated in an attempt to find evidence against ziad jarrah , '' said his uncle , jamal jarrah .