A former senior executive at Norwegian Cruise Line Holdings has been arrested in Argentina in connection with an alleged fraud scheme said to have cost the cruise giant more than $2 million.

Thomas “Tom” Markwell, 54, was taken into custody in Buenos Aires on Monday 23rd February 2026. According to local media outlet Infobae, Interpol agents arrested him in the Palermo neighbourhood in the northern part of the Argentine capital. He is now awaiting extradition to the United States to face multiple criminal charges.
The case was first opened in October 2023, when prosecutors alleged that Markwell and two accomplices orchestrated a long-running scheme involving fraudulent invoices submitted to Norwegian Cruise Line Holdings. The total amount in question exceeds $2 million.
Alleged Invoice Scheme Spanned Years
Markwell most recently served as Senior Director of Events for Norwegian Cruise Line Holdings, a role he held from July 2019 until September 2023. While the cruise company has not detailed his precise responsibilities, the position would typically involve organising corporate events, liaising with shareholders and partners, and coordinating corporate gifting and sponsorship activities.
Prosecutors allege that Markwell exploited his authority to approve payments by working with two external accomplices who were not employed by the cruise line or any related company. The pair allegedly issued invoices through a fraudulent supply business known as “The Gifting Company”.
The invoices were reportedly structured to fall below internal financial thresholds that would have triggered additional scrutiny or audit alerts. Authorities claim the documents did not fully disclose the services or products supposedly provided, yet remained within Markwell’s authorised approval limits.
Once the invoices were processed and paid by Norwegian Cruise Line Holdings, investigators allege that Markwell and his accomplices diverted and shared the funds.

Court documents state that dozens of transactions were used to carry out the scheme. Among them were at least two payments totalling $165,000, as well as an $82,000 transfer allegedly made directly into his girlfriend’s bank account.
In addition to fraud-related offences, Markwell is facing identity fraud and theft charges. Prosecutors allege he used his girlfriend’s account as part of the operation. There has been no indication that she was aware of or involved in the alleged criminal activity, and she has not been named.
At least seven charges of wire fraud and identity theft have been filed against Markwell. If convicted, he could face a minimum sentence of 20 years in prison under US law.
Markwell, who was born in Illinois, has spent decades working in the travel industry. He was educated at Eastern Illinois University and Robert Morris University, also in Illinois.
Cruise Fraud Cases Continue To Surface
While this case is one of the most significant to directly involve a senior cruise line executive, it is not the only example of alleged fraud connected to the cruise sector in recent years.
There was a recent story of a New York woman accused of operating a fraudulent travel agency that failed to book clients’ holidays, as well as incidents involving fake cruise gift cards, onboard theft and credit card fraud targeting passengers.
In other cases, cruise guests have been arrested in ports such as Miami and in Brazil over financial crimes linked to sailings.
However, allegations involving an executive at a major cruise corporation are comparatively rare, making this one of the largest cases of its kind to surface within the industry.
As extradition proceedings move forward, further details are expected to emerge regarding the extent of the alleged scheme and the status of Markwell’s two unnamed accomplices, whose whereabouts have not been disclosed.
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