Kryvyy Rih是烏克蘭總統Volodymyr Zelensky的故鄉，有人猜測這次襲擊是為了報復，因為烏克蘭最近在該國東北部的哈爾科夫地區成功進行了反攻。
周四的導彈襲擊是針對被稱為 "工業企業 "的地方。當地軍事管理部門的負責人說，這次襲擊造成了嚴重損失。
Ukrainians have been celebrating their recapture of the north-eastern city of Izyum, one of the highlights of their counter-offensive that has marked a new phase in the war.
"The dead are still being counted here, but local officials saw 47 people - children among them - killed in an air strike on a five-story block of flats back in March."
While Russian law does not allow commutation of prison sentences in exchange for mercenary service, Mr Prigozhin insisted that "nobody goes back behind bars" if they serve with his group.
On Thursday evening he appeared to defend the idea of sending prisoners to the frontline. In a statement on his company's social media feed he addressed those who were uncomfortable with the idea, saying it's "either prisoners or your children - you decide".
While the pressure mounts on the Kremlin after Russia's military setbacks, President Vladimir Putin has left the country for what is only his second foray abroad since February's invasion.
Kryvyy Rih is the hometown of Ukraine's President, Volodymyr Zelensky, and there has been speculation that the attack was carried out as an act of revenge, because of Ukraine's successful recent counter-offensive in the country's north-eastern Kharkiv region.
Thursday's missile strike was on what was described as an "industrial enterprise". The head of the local military administration said it had caused serious damage.
Who is winning the war in Ukraine?