Explosion in the building of the Russian FSB; One person died, two were injured VIDEO

Dramatic footage has been posted on social media showing a huge fire engulfing part of the building, and much of the city is covered in thick smoke.
One person died and two were injured in the fire, according to the emergency services.
According to the governor of the Rostov region Vasiliy Golubev, the cause of the fire was a short circuit in the electrical installations.
As he stated on his Telegram channel, the fire broke out in the auxiliary premises of the FSB Border Service, and the fire caused the explosion of containers with fuel and lubricants, reports RIA Novosti.
The Ministry of Emergency Situations told TASS that the fire broke out on the second floor of a two-story brick building with an area of 880 square meters. Local residents said that before the fire, a strong explosion was heard.
The Russian news agency TASS stated that the building where the fire broke out was used by the FSB service for border patrols.
As it is also stated, numerous teams of emergency services are on the ground while the fire is spreading through the ground floor building, in a densely populated part of the city.

🔥In Rostov an FSB building caught fire, eyewitnesses report that they heard an explosion before the fire started. pic.twitter.com/utuD55b4fJ

— NOL 🇪🇺 🇺🇦 (@NOELreports) March 16, 2023

🔥 FSB BUILDING IS ON FIRE
Explosions have been heard in the area of the fire at the 🇷🇺 intelligence services building in Rostov-on-Don.
It is most likely ammunition exploding.
Cause of the fire is yet unknown. pic.twitter.com/BtIhYf6HUT

— Jason Jay Smart (@officejjsmart) March 16, 2023