"Fire erupted at a fuel and energy infrastructure facility as well as a two-story building," he wrote.
Firefighters have since extinguished the fire, with a Ukrzaliznytsia firefighting train brought in to assist.
The officials clarified that there were no deaths or injuries.
The State Emergency Service said that more than 100 responders, including volunteers, National Guard firefighters, and local fire brigades, were mobilized to put out the blaze.
Explosions were reported in Odesa earlier in the night.
Russian forces also attacked Kharkiv overnight with ballistic missiles and drones, striking a residential building. Five people, including three children, were killed, and 17 others were injured.