EMCO Rules Out Human Error in Bulgaria Ammunition Depot Fire
A fire and explosions hit an EMCO ammunition depot near Tryavna on August 10. No casualties were reported, while authorities investigate the cause.
A fire followed by explosions struck an ammunition storage facility operated by Bulgarian defense company EMCO near the village of Belitsa, close to Tryavna, at around 10:30 a.m. on August 10. EMCO said it had ruled out human error, while Bulgarian authorities said there was no evidence at this stage of foreign interference. No casualties were reported.
The distinction is significant because EMCO facilities have experienced multiple previous fires and explosions, and Bulgarian prosecutors have investigated earlier ammunition depot incidents for possible links to Russian operatives. However, neither EMCO nor Bulgarian authorities have attributed the August 10 incident to sabotage, and an EMCO manager later indicated that nothing identified so far pointed to external interference.
Fire hit EMCO ammunition storage site near Tryavna
The incident occurred at an EMCO storage facility near Belitsa in central Bulgaria. The company said the fire caused no injuries, damage to surrounding forest areas or third-party property, and no environmental pollution.
Tryavna Mayor Dencho Minev separately confirmed that no one had been killed or injured. According to information provided to the mayor by company management, the warehouse did not contain materials presenting a toxic hazard to the population, and officials identified no radiation or serious toxic contamination risk.
The fire was subsequently brought under control, according to Bulgaria's fire service. Authorities and the company are investigating the cause.
EMCO's Tryavna operation produces, repairs and modernizes artillery and tank ammunition in calibers including 100 mm, 115 mm, 122 mm, 125 mm, 130 mm and 152 mm, according to the company's public description of the facility.
EMCO points to previous ammunition depot incidents
EMCO said the August 10 fire follows incidents involving its storage facilities in 2011, 2022 and 2023. The company also referenced explosions affecting other Bulgarian defense manufacturers during the previous 15 years, including incidents at state-owned VMZ Sopot in 2015.
That history makes the investigation sensitive for Bulgaria's defense sector. In 2021, Bulgarian prosecutors said they had identified connections among four explosions at ammunition facilities between 2011 and 2020 and were examining the possible involvement of six Russian nationals.
One of those cases involved an EMCO warehouse near Lovnidol that exploded on November 12, 2011. Bulgarian prosecutors said the depot contained ammunition and explosives intended for export to the Georgian Ministry of Defense.
The prosecution service also investigated explosions at VMZ Sopot facilities near Iganovo in 2015 and an incident involving an Arsenal depot at Muglizh in 2020. Prosecutors said in 2021 that the incidents shared characteristics and examined whether their purpose was to disrupt ammunition supplies to Georgia and Ukraine.
Karnobat fires added to concerns around EMCO facilities
EMCO subsequently experienced two incidents at its Karnobat facilities.
A munitions explosion occurred there on July 31, 2022. Another fire broke out at an EMCO storage facility at Karnobat on June 25, 2023.
After the 2022 incident, EMCO owner Emilian Gebrev publicly alleged Russian involvement, although he acknowledged that he did not have direct evidence supporting that conclusion. The cause therefore remained distinct from the allegations surrounding the earlier cases investigated by Bulgarian prosecutors.
An investigation published in 2023 by The Insider and Bellingcat separately linked the 2011 Lovnidol explosion to activity associated with Unit 29155 of Russia's Main Intelligence Directorate, or GRU. Bulgarian authorities had previously investigated Russian links to that incident, but the investigative reporting went further in attributing the operation.
Bulgaria has not attributed the August 10 fire to sabotage
The history surrounding EMCO makes attribution a central question, but available evidence does not establish that the August 10 incident resulted from deliberate interference.
EMCO's statement that human error can be excluded does not itself establish sabotage. The company said it is working with the relevant authorities to determine the cause, while Bulgarian officials reported no evidence of foreign interference at this stage.
The incident comes as ammunition production and storage infrastructure across Europe carries greater strategic importance because of increased demand associated with national stockpile replenishment and support for Ukraine. Bulgaria retains an established ammunition manufacturing base, including production of Soviet-standard calibers that remain widely used by Ukrainian forces.
Bulgaria is also considering additional investment in ammunition and propellant capacity. Plans involving German defense group Rheinmetall and Bulgarian state-owned VMZ have included proposed production of NATO-standard 155 mm artillery ammunition and gunpowder, although the financing and implementation of those projects have faced political and financial questions in 2026.
The investigation into the Tryavna incident will therefore attract attention beyond the immediate damage at the site. Its significance rests not only on determining what caused the August 10 fire, but also on whether investigators can establish a clear technical explanation against the background of unresolved and previously investigated incidents across Bulgaria's ammunition industry.
EMCO ammunition depot fire: key questions
What happened at the EMCO facility in Bulgaria?
A fire followed by explosions occurred at an EMCO ammunition storage facility near Belitsa, close to Tryavna, at approximately 10:30 a.m. on August 10, 2026. No casualties were reported, and firefighters later brought the incident under control.
Did EMCO blame sabotage for the fire?
No. EMCO said human error could be ruled out, but the company did not attribute the incident to sabotage. Bulgarian authorities also reported no evidence at this stage of foreign interference.
Has EMCO experienced previous ammunition depot explosions?
Yes. EMCO cited incidents at its facilities in 2011, 2022 and 2023. Bulgarian prosecutors previously investigated the 2011 explosion alongside other ammunition depot incidents for possible Russian involvement.
What does EMCO produce in Tryavna?
EMCO says its Tryavna facility works on the production, repair and modernization of artillery and tank ammunition, including 100 mm, 115 mm, 122 mm, 125 mm, 130 mm and 152 mm calibers.
