We know his whereabouts; his identity is more tenuous.
Numerous women arrested while pregnant have given birth in Argentine prisons, yet nobody knows the whereabouts and identity of their children who were furtively adopted or sent to an orphanage by order of the military authorities.
If they attempt fraud, the email has hidden information that a computer savvy person can use to determine the whereabouts and identity of the sender.
But Indian police officials said those directing the attacks, who are believed to be from Lashkar-e-Taiba, a militant group based in Pakistan, were using a Voice over Internet Protocol (VoIP) phone service, which has complicated efforts to determine their whereabouts and identities.
The Foreign Office, which has asked the media not to speculate on Judith Tebbutt's whereabouts or the identity of her captors for fear of endangering her, is continuing to call for her release.
In an important decision last year, the state's highest court, the Court of Appeals, held that the time limit in a serious felony case can be extended up to another five years when the police are diligent yet cannot discover a suspect's whereabouts because his identity remains unknown.
Spokesmen for Hamas, the leading party in the new unity government, have told local news agencies that "Hamas fully reports the kidnappers' identity, whereabouts and destination every time a kidnapping happens, yet we are surprised to learn that the kidnappers are instead rewarded and allowed roam free".
By retaining between 8-15 percent of every transaction, the 29-year-old began profiting from the black market, with nary a footprint in the sand or blip on the map to reveal his identity, whereabouts, or methods to family, friends, and the Feds.
It tracks the identities, whereabouts and fates of political prisoners detained since 1981.
