Security building on fire in Russia's Rostov region

At least one person has been killed and two injured in a fire at a building used by Russia's Federal Security Service (FSB) in the southern city of Rostov-on-Don, Russian media say.

Dramatic footage on social media shows a large blaze, with smoke visible all over the city.

Rostov's regional governor said a short circuit appeared to have caused the fire, which ignited fuel tanks.

The street where the building is located has been cordoned off.

The blaze occurred at a building belonging to the FSB's regional border patrol section in a built-up area of the city.

The FSB is Russia's internal security service and is responsible for counter-intelligence, border security and counter-terrorism.

Rostov Governor Vassily Golubev said the fire had spread over 800 sq m, causing two walls to collapse.