Konstantinos Diamantakos is a high-ranking officer with the Boston ICE Field Office.
ICE agent Konstantinos Diamantakos lives in Marlborough MA, with his wife. He also goes by Kostas Diamantakos.
- Year of Birth: 1970
- Web identities: kdiamantakos, kostas2001, kosta_4
- Facebook account: Kostas Diamantakos
Identity trace
ICE agent Konstantinos Diamantakos was exposed in the 2024 DemandScience leak. It identified him by a unique nickname that he also used as an employee of Boston’s Paragon Systems and his Facebook account.
He uploaded a photo of himself wearing a jacket with a DHS emblem to his Facebook profile in February 2026. Other photos, which we will not share, definitively link him to his address in Marlborough MA.
As an ICE agent
ICE agent Konstantinos Diamantakos has been named in at least 10 habeas petitions as a defendant, alongside ERO Boston Field Office Director Todd Lyons and Acting ICE Boston Field Office Director Patricia Hyde. This suggests that he serves an administrative role within the Boston field office, maybe as an assistant director.
In his community
ICE agent Konstantinos Diamantakos claims to have served as a “tank destroyer” with the Hellenic Army in Greece during the 90s. He has uploaded a handful of photos to his social media, including a photo of him posing with an anti-tank missile launcher, that back up his claim. He also claims his hometown as the village of Platanos in Greece.
This naturally suggests that ICE agent Konstantinos Diamantakos is himself a Greek immigrant into the U.S.
In 2010, ICE agent Konstantinos Diamantakos was sued for sole legal custody by the mother of his son (at the time one year old). In 2012, he also seems to have filed for Chapter 7 bankruptcy in the MA district of U.S. Bankruptcy Court.
ICE agent Konstantinos Diamantakos spectated at his son’s junior karate school in Marlborough MA. Several of Diamantakos’s more recent photos feature his son as a teenager during trips to Greece and China.
Online
While ICE agent Konstantinos Diamantakos has deactivated his LinkedIn profile, he still maintains a publicly visible Facebook account.
He has been keeping it updated since 2010, with a great deal of travel & family photos from trips to Greece and China, location check-ins, and mindless platitudes.
ICE agent Konstantinos Diamantakos’s recent Facebook timeline includes a plethora of AI-generated slop focusing on the history of Greek immigration into the United States from a positive standpoint. He also uploads content regarding Chinese immigration history, which corresponds to the apparent racial background of both his current wife and the mother of his child.
In conclusion
An immigrant himself, ICE agent Konstantinos Diamantakos now plays a role in removing other immigrants from the county. People like Konstantinos Diamantakos work incredibly hard to pull the ladder up after themselves, to make sure people like themselves don’t get the opportunities they were once afforded, and to serve an oppressive state that would turn on him at any given convenient moment. Do his subordinates look forward to the day they too can deport him back to Greece?
In 2011, ICE agent Konstantinos Diamantakos put a Bertrand Russell quote in his own mouth: “Fools and fanatics are always certain of themselves, but wiser people are full of doubts.” If he is sure, absolutely certain that he’s doing the right thing, then he is a fool by his own assessment. If he’s not sure he’s doing the right thing, he should simply walk away.