A blast hit the Ukrainian capital Kiev at the night, 112.ua reported.
A criminal case has been launched in Ukraine after traces from an explosive device have been found at the site of an overnight blast in central Kiev, the Ukrainian capital's police said.
"An investigative and operational group with bomb disposal experts were immediately sent to the scene of the incident. During the inspection of the territory, law enforcement officers found deformed fragments of an explosive device that were sent for examination," Sputnik cited the police press service as saying.
It added that a criminal case on the deliberate destruction or damage to property has been opened.