From 3p.m. to 5 p.m. 15 blasts rocked the city, reports BBC Ukraine, citing Xinhua government agency.
According to available information, there had been separate explosions at locations including a shopping mall, prison, hospital, public service dormitories and vegetable market.
A lot of photos showing smoke, ruins and destroyed streets have appeared in social networks Wednesday.
Investigation into the case has been opened. The city police chief told reporters the explosives apparently have been placed in express delivery packages. The chief hasn’t mentioned either suspects or possible crime motives.
The rescuers are still at the accident site.