Cartel boss Daniel Kinahan has been formally served with a racketeering summons in his Dubai bolthole.
For the first time, the 44-year-old's security cordon in the UAE has been breached.
Agents, co-ordinated by lawyer and retired US marine Eric Montalvo, succeeded in formally serving him with a demand to appear before a US court.
The Sunday World can also today divulge details of the Dublin-born drug kingpin's lifestyle in the Emirates.
These include how Kinahan is transported in cars registered to third parties, and hidden from view by blacked-out windows - and how he lives in gated compounds and security guarded buildings, closed off to the public at all times.
Kinahan is accused of racketeering and money laundering, and the claims have been issued as part of proceedings in a high-profile legal wrangle between Heredia Boxing Management and MTK, over Mexican boxer Jo Jo Diaz.
The summons, which has now been certified in the UAE as served on Kinahan, gives him just days to respond to the charges against him, or face judgment in default that could see damages ordered against him running to tens of millions of dollars.
But more concerning to billionaire Kinahan will be the fact that his failure to answer the racketeering and money-laundering questions could be viewed by US boxing authorities as a tacit acceptance of the charges against him.
"They tried to (dodge the summons) but we already got a hold of Kinahan and MTK," Mr Montalvo - who served combat tours in Iraq and Afghanistan during 21 years in the US Marine Corps - told the Sunday World.
"Daniel Kinahan has been served and MTK as well."
Pressed on the issue of how the summons was served, he said, given his military background: "I have the ability to communicate in a way that most firms cannot, with an existing law firm that understood what needed to happen and could do this on our behalf.
"For most people, trying to find some Dubai law firm to do that would be a Herculean effort. Had I not had this relationship, then certainly I would have been up a pole. So, I was fortunate to have established this relationship several years ago.
"And I can assure you that we have written certification of the service being accomplished in accordance with UAE law - and we can act on that."
Mr Montalvo said 21-day period to respond since service has expired, but his team is not yet in a position to seek judgment against Kinahan and MTK in default - as they are continuing to work on amending the complaint before the Californian courts.
"We may have to serve another summons on him but that is not a problem," he said.
"I'm evaluating that, because if I can get default judgment then maybe I'll just do that, I just haven't made my decision yet. I'm weighing up my different options because service the last time was a pain.
"I got it done but it was a pain and I'm not sure if I want to go through that again. But I'd rather get it right than just get it done. The default judgment would request a certain amount and he would be stuck with that when the judge approves it.
"I can't get into the calculus of that right now."
Asked how difficult Kinahan had made it to serve the summons, he said: "People with money can put up barriers. They can have guards and they can have closed compounds.
"Buildings in Dubai are not openly accessible and you have to have a basis for being in a building.
"There is fair amount of scrutiny and there are cameras all over the place. Unless you know where someone is going to be, it's not as easy as it is in other countries to get a hold of somebody.
"You can travel in cars that are not necessarily registered to him and everything is blacked out, so it is a challenge.
"If you have money you have access to travel and movement that most people don't and the ability to close yourself off from people intruding upon your privacy.
"That's what part of Dubai is about - money and exclusivity. And with the amount of money that he has, he can certainly make it difficult, but not impossible.
"It's just harder. A guy showing up to work at Dunkin' Donuts everyday, he's going to get served. But a guy that has €500m or a billion dollars running around and he's also a narco-terrorist, I think that made it a little harder.
"If it was easy to catch a criminal, then cops wouldn't have jobs, right?"
Asked how confident he is that the courts in California will order Daniel Kinahan and MTK to pay up in the wrangle over Diaz, Mr Montalvo said: "I do believe we will ultimately prevail ."
The allegations against Kinahan and MTK are contained in a 32-page filing, submitted to the US District Court in California, in support of a civil suit against the Irish organised crime boss and the company he founded in 2012.
The papers, filed by Mr Montalvo, allege that MTK lured Jojo Diaz away from his contract with Heredia Boxing Management (HBM) by offering him a $100,000 advance on his next prize purse, which "essentially caused Mr Diaz to mortgage his future away".
The papers also allege MTK funded a campaign against HBM to get it to release Diaz as a client.
This included the sending of "threatening" letters and social media posts smearing Heredia.
The claim also alleges Kinahan, who is regarded by gardaí as the head of the Kinahan Organised Crime Group, still controls MTK, and uses fights to launder money from his international drugs trafficking group.
And it accuses MTK and Kinahan of breaching the Racketeer Influenced and Corrupt Organisations (Rico) Act by using money from organised crime activity. The Rico Act was introduced to tackle organised crime but can be used in civil suits.
MTK, which was founded by Kinahan, wants to become the dominant force in US boxing.
It has repeatedly claimed Kinahan has stepped away from the company.
In a witness statement submitted to the High Court in London, MTK's then CEO Sandra McClumpha said "Mr Kinahan has no interest in (or association with) MTK whatsoever. I deny unequivocally MTK's association with any criminal enterprise."