The police are investigating a recent explosion on Himnaziyna Street in Odesa, southern Ukraine.

"The Prymorsky district police department of Odesa was alerted about the incident on January 4. Investigators from the Prymorsky district police department who arrived at the scene established that unknown persons had used an explosive device to blow up the entrance door to a public organization's offices, located in a one-storey building at 3, Himnaziyna Street," a city police spokesman said on Monday.

No one was hurt in the blast, which destroyed the entrance door and blew out windows in nearby buildings.

A criminal inquiry has been opened into the Odesa explosion under Part 1 of Article 258 of Ukraine's Penal Code (terrorist attack).

Over the past month, Odesa has seen a series of terrorist attacks, but their organizers are not yet been identified.

Police, the Ukrainian Security Service, the National Guard and army soldiers are holding joint anti-terrorism drills in the city.