One Man Behind European Jewish Terror Attacks Investigation 2026

An extraordinary case has emerged from a Manhattan courtroom, where Mohammad Baqer Saad Dawood al-Saadi, a 32-year-old Iraqi man, pleaded not guilty to orchestrating a series of terrorist attacks targeting Jewish communities across Europe. The attacks, which included bombings of synagogues, a Jewish school, and a Jewish charity ambulance depot, caused widespread fear and alarm from Belgium to the United Kingdom. Al-Saadi, who claims to be a prisoner of war, is accused of running the entire campaign from an office in Baghdad using social media platforms like Telegram and Snapchat to direct what he called "Shadow Soldiers."

According to court documents, al-Saadi operated under the banner of a previously unknown group, Harakat Ashab al-Yamin al-Islamia (HAYI). However, investigators say HAYI was not a sprawling network but a one-man operation. The case has stunned security experts because it represents a new form of low-cost, high-impact terrorism that leverages teenage petty criminals and encrypted messaging to evade traditional surveillance.

The Campaign of Fear Across Europe

Between early March and the end of April 2026, a wave of 18 attacks struck Jewish targets in Belgium, the Netherlands, and the United Kingdom. The first strike occurred just 52 hours after al-Saadi allegedly posted a coded message on Telegram, giving "permission to all silent cells for work." The message included a three-letter, nine-number code that apparently identified specific teams or individuals.

Attacks included a makeshift bomb outside a synagogue in Liège, Belgium, followed by bombings at a synagogue in Rotterdam and a Jewish school in Amsterdam. In the Netherlands, a bomb also targeted a branch of the Bank of New York Mellon. The violence then crossed the English Channel, where CCTV captured three individuals setting fire to four ambulances belonging to a Jewish charity in north London. No lives were lost, but the campaign caused immense psychological trauma and heightened security concerns across the continent.

Who Is Mohammad Baqer Saad Dawood al-Saadi?

Al-Saadi, now 32, was recruited in his early 20s into a Shia militia created by Tehran after the 2003 US-led invasion of Iraq. He was later deployed to Syria to bolster the regime of Bashar al-Assad, where he gained experience in guerrilla warfare and propaganda. Michael Knights, an expert in Iraqi militia at Horizon Engage, described al-Saadi as a skilled operator who understood the power of social media to incite violence remotely.

"He exaggerated his own importance and used simple tools—encrypted apps, coded messages, and petty criminals—to create a terror network that baffled Western intelligence," Knights said. Al-Saadi faces life behind bars on terrorism-related charges, but his case highlights a growing vulnerability in European security: the ability of a single individual to inspire and coordinate attacks using off-the-shelf technology.

How Social Media Enabled the Attacks

The investigation reveals that al-Saadi used Telegram and Snapchat to issue instructions to a loose network of teenage criminals recruited through online channels. These young individuals, often with no prior ideological commitment, were paid small sums to carry out the attacks. This decentralized, on-demand terror model is a departure from traditional hierarchical groups like ISIS or al-Qaeda.

Security services across Europe are now scrambling to adapt. The case has prompted calls for greater regulation of encrypted messaging apps and better monitoring of coded language online. However, civil liberties advocates warn that overreach could infringe on privacy rights. The balance between security and freedom remains a contentious debate.

Key Details of the Case

• 18 attacks across Belgium, Netherlands, and UK between March and April 2026
• Targets: Synagogues, Jewish schools, Jewish charity ambulances, and a bank
• Method: Encrypted messaging (Telegram, Snapchat) and coded instructions
• Perpetrator: Mohammad Baqer Saad Dawood al-Saadi, a former Shia militia member
• Group name: Harakat Ashab al-Yamin al-Islamia (HAYI) – a one-man operation

FAQ: Understanding the Case

What is Harakat Ashab al-Yamin al-Islamia (HAYI)?

HAYI is a previously unknown organization that claimed responsibility for the attacks. However, court documents reveal it was not a real militant group but a cover used solely by al-Saadi to create the illusion of a broader network. This psychological tactic amplified fear and media speculation.

How did al-Saadi recruit attackers without meeting them?

Al-Saadi used social media platforms like Telegram and Snapchat to issue coded instructions to young criminals recruited online. These individuals were often paid small sums and had no deep ideological commitment. The use of petty criminals made the network harder to trace because they had no prior terror links.

What does this mean for European security?

This case demonstrates a new paradigm in terrorism where a single individual can orchestrate a multinational campaign using cheap technology. European security services are now reviewing their monitoring of encrypted apps and the recruitment of vulnerable youth. The challenge is to detect lone actors who inspire others without direct contact.