The Czech Constitutional Court has dismissed a legal challenge filed by one of the accused against his pre-trial detention in the ongoing investigation into the March arson attack at the LPP Holding arms factory in Pardubice, according to court database records. Justices determined that the detention order relied on robust and clearly explained legal grounds, rendering the complaint manifestly ill-founded.
The man faces two exceptionally serious crimes: a terrorist attack and participation in a terrorist group. Pre-trial detention was initially ordered in March by the District Court in Pardubice and subsequently upheld in April by the Pardubice branch of the Regional Court in Hradec Králové. According to the Constitutional Court, both lower courts thoroughly examined the specific circumstances of the case and justified the custody by pointing to concrete evidence included in the resolution on the initiation of criminal prosecution that established a reasonable suspicion against the complainant at this stage of proceedings.
In his legal challenge, the man argued that authorities lacked evidence to justify his prosecution and ongoing custody, claiming he possessed an alibi for the time of the attack and that police relied merely on “distant indications,” such as his involvement in the pro-Palestinian movement. The fire broke out inside a manufacturing hall at LPP Holding on March 20, causing damage in the hundreds of millions of crowns. An alleged anti-Israel group calling itself The Earthquake Faction claimed responsibility for the incident, stating the act targeted weapons production for Israel.
Investigation Scope and Background Context
LPP Holding announced several years ago its intention to manufacture and develop drones in Pardubice in cooperation with the Israeli company Elbit Systems, though according to the arms factory, the cooperation never started. Security services have also examined the possibility of a so-called false flag operation, where a declared group might serve as a cover for another entity or a state actor, according to media reports.

Police have gradually detained 11 people in connection with the attack on the arms factory. Eight are in custody in the Czech Republic, while three others remain detained in Poland. The first accused were taken into custody by the court at the end of March, with others following later.
Judicial Review and Next Steps
The Constitutional Court reaffirmed that the lower courts sufficiently dealt with the specific circumstances and properly justified the detention.

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