Ukraine detains organizer of defense industry event struck by Russian missile that killed 10, charged with negligence

Ukraine has detained the chief organizer of the defense industry event struck by a Russian ballistic missile in Kyiv Oblast on 24 July, as investigators examine whether security failures contributed to an attack that killed 10 people and injured about 100.

Prosecutor General Ruslan Kravchenko stressed that Russia alone bears responsibility for the strike, calling it another war crime, while saying investigators are also examining circumstances that may have increased the scale of the tragedy.

"Russia committed this war crime," Kravchenko said. "But the investigation is also establishing the circumstances that may have increased the scale of this tragedy."

Investigation focuses on event organization

According to the Prosecutor General's Office, an arms industry association organized the event without approval from the military command or regional and district military administrations.

Investigators say more than 300 people were invited to the outdoor demonstration, which featured Ukrainian air defense technologies and other defense systems. The nearest bomb shelter, measuring just 34 square meters, was located about 100 meters from the venue.

Authorities said invitations were distributed nine days before the event, while the exact location and time were shared with confirmed participants one day before it took place. Investigators are examining whether those arrangements could have enabled Russia to prepare a targeted missile strike.

The event's chief organizer has been detained on suspicion of official negligence resulting in grave consequences. Prosecutors said searches were carried out at the association's office and the homes of individuals involved in organizing the event.

Kravchenko said investigators will also assess whether officials from the National Police, Security Service of Ukraine (SBU), military command, state authorities, or local governments failed to respond appropriately to potential security risks.

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Association rejects claims of public disclosure

The ARMADA Association, which organized the demonstration, said it would fully cooperate with investigators but rejected claims that the venue had been publicly advertised.

In a statement, the association said the event was a closed practical demonstration for representatives of Ukraine's defense industry and potential users of anti-aircraft and counter-drone technologies.

It said the exact location was never publicly disclosed and was shared only with registered and vetted participants. The association also disputed online claims that promotional materials circulating on social media were public announcements, saying they were invitations distributed through closed channels.

ARMADA said the demonstration required an open area because participants were testing air defense, electronic warfare, radar, and drone interception systems under realistic conditions.

The association urged the public not to share photographs, videos, participant information, or the exact location while the investigation is ongoing.

Russia's strike killed 10 and injured 100

Russia launched the daytime ballistic missile attack on 24 July, striking the event in Bucha district, Kyiv Oblast. The attack killed 10 people, injured around 100 others, and damaged dozens of nearby homes and vehicles.

Ukraine's Air Force said Russia launched three ballistic missiles during the attack. Air defenses intercepted one, while two struck Bucha district.

Kyiv Oblast observed a day of mourning on 25 July in memory of those killed, with flags lowered across the region and entertainment events restricted.