Mohamed Atta called his father after 9/11 who also blamed Israel's Mossad for the attacks

Wikipedia: Family reaction and denial - Atta's father, Mohamed el-Amir Awad el-Sayed Atta, a retired lawyer in Egypt vehemently rejected allegations his son was involved in the September 11 attacks, and instead accused Mossad and the U.S. government of having a hand in framing his son. Atta Sr. rejected media reports his son was drinking wildly, and instead described his son as a quiet boy uninvolved in politics, shy, and devoted to studying architecture. The elder Mr. Atta said he had spoken with Mohamed by phone the day after the September 11 crashes. He held interviews with the German news magazine Bild am Sonntag in late 2002, saying his son was alive and in hiding in fear for his life, and that American Christians were responsible for the September 11 attacks.In a subsequent interview in 2005, Atta Sr. stated "My son is gone. He is now with God. The Mossad killed him."

http://www.aparchive.com/metadata/youtube/959bcfdcd67543d5ca93fdbdc6099806