Ukrainian air defense and mobile drone hunter groups shot down 11 out of 17 Russia-launched drones over four regions of the country, the air force said Thursday.

It said in a statement the Iranian-made Shahed drones were downed over the Odesa and Mykolayiv regions in the south, the Dnipropetrovsk region in the southeast, and the central Vinnytsia region.

Regional officials said the drone attack damaged more than 20 residential houses and commercial buildings in the city of Mykolayiv and hit civilian infrastructure facilities in Odesa on the Black Sea in the south.

There were no casualties reported. Details of damage in other regions were not immediately clear.