has been found and may be used to a terrorist attack. the third such tunnel to be discovered over the past year. they say the construction materials are being used to build tunnels like these. in egypt now. an american man is dead. many questions after an american arrested weeks ago after a car bombing was found dead in a police station. but was it suicide or was this something sinister? ben wedeman is live in cairo this morning. ben, what do we know about this man and what is the status of the investigation into his somewhat mysterious death? use they believe it was an parent suicide. he was picked up by the egyptian security forces in the northern