Matios told a briefing in Odesa on Thursday, Censor.NET reports citing Interfax-Ukraine.
"The investigation has found the following flaws: the fire alarm system was off, and half of the safeguard hardware was missing," Matios said.
He also said that the depot experienced personnel issues: it lacked military guards due to low salaries, and employed mostly elderly people.
Matios said that at the moment of the emergency on Sept. 26, the depot was guarded by only several anti-air defense posts and 17 employees of military guard.
Read more: Fire in Kalynivka depot localized, towns to be cleared of mines in upcoming days, - Head of State Emergency Service Chechotkin
As reported, on Sept. 26 at around 10 p.m., State Emergency Service was reported of ammunition explosions in the military depot of the Defense Ministry in Kalynivka village. A Censor.NET source said that the explosions were heard in the village, and ammo was seen flying over the depot. The Kalynivka depot is more than 1,000 ha and packed with ammunition of various types.
As of 10 a.m. Sept. 27, more than 30,000 people have been evacuated. For that purpose, 50 buses, 10 ambulances, and Emergency Service psychologists were involved. Two people were traumatized and taken to hospitals.
Related materials: Fire at ammunition depot in Kalynivka