It appears that the 65 year-old former embassy worker purchased the scandalous phones from Piraeus and would consistently travel to the US during the period when the wiretappings were being held, or until March 2005.
The report on enikos pointed out that last summer the embassy worker's lawyer had contacted Mr. Foukas in order to inform him that his client was going to come to Greece and cooperate with the investigation (as well as possibly give useful information), but William B. never did.
Since then, the investigation focused on gathering as much information as it could and as such discovered an antenna in the southern suburbs of Athens which was used by the perpetrator (s) to secretly listen in on the conversations of the former prime minister. The report points out that the location was used as the headquarters for the wiretappings.
Apparently a second antenna was used at the very same location sometime in the past for the same purposes of gathering information.
Quite interestingly, after the eavesdropping case was brought to light, the suspect was allegedly removed from Greece for a short while and returned in August 2005 under a diplomatic identity, as the first secretary at the US embassy.
Based on available evidence, the defendant cooperated with the Greek authorities mainly on counter-terrorism issues and participated in an operation code-named "web” which involved the removal of a large quantity of explosives from the Iraqi embassy in 2003.
The same man appears to have served in his country's intelligence service since 1990 when he was transferred to Athens.
The same investigation will also decide whether the suspect had any involvement in the assassination plot targeting former prime minister Costas Karamanlis.
Articles in Greek by Anna Kandyli, enikos.gr via dexiextrem, ANA-MPA
If you want to learn the background to this story then please read:
PASOK MP Implicated In Karamanlis Wire-Tapping Case - Breached State Secrets
http://hellasfrappe.blogspot.gr/2013/11/pasok-mp-implicated-in-karamanlis-wire.html
RealNews Report Says Greek-Americans & NSA Behind Spy Network Against Costas Karamanlis
http://hellasfrappe.blogspot.gr/2013/11/realnews-report-says-greek-americans.html
Prosecutor orders investigation into wiretapping allegations
http://hellasfrappe.blogspot.gr/2015/01/prosecutor-orders-investigation-into.html
SPECIAL REPORT - Supreme Court To Merge Cases Of Wire-Tapping, Pythia Plan, Assassination Plot Against Karamanlis Into ONE
http://hellasfrappe.blogspot.gr/2013/02/special-report-supreme-court-to-merge.html
Case on Suspicious Death of Vodafone Employee Associated to Greek Wire-tapping Scandal Re-opens
http://hellasfrappe.blogspot.gr/2012/04/case-on-suspicious-death-of-vodafone.html
Greek Watergate Scandal- US Embassy behind phone-tapping of Karamanlis
http://hellasfrappe.blogspot.gr/2011/08/greek-watergate-scandal-us-embassy.html
BREAKING - Prosecutors Point To Specific Direction In Karamanlis Assassination Attempt
http://hellasfrappe.blogspot.gr/2013/04/breaking-prosecutors-point-to-specific.html