The Ukrainian Air Force warned there was a threat of a missile attack in five oblasts on the morning of 9 December, with the warning being in place for more than 20 minutes.
Source: an air-raid warning map; Air Force
Details: In addition to the constant air-raid warnings in Luhansk Oblast and Crimea, air-raid warnings were issued in Kirovohrad, Mykolaiv, Dnipropetrovsk, Zaporizhzhia and Kherson oblasts on the morning of 9 December.
Later, the all-clear was given in Mykolaiv and Zaporizhzhia oblasts.
The Air Force stated that there was a possibility of a missile attack.
Update: The air-raid warning was in place for over 20 minutes. There were no missile launches.