By RFE/RL
President Petro Poroshenko said there are a "significant" number of casualties after missiles hit Ukraine's military headquarters and a residential area in the eastern city of Kramatorsk.
Local officials say at least three people were killed and 15 wounded.
Poroshenko told parliament on February 10 that the attack hit the headquarters of the "Antiterrorist Operation," as Kyiv calls the fight against pro-Russian separatists in eastern Ukraine, and several civilian houses.
He said both civilians and military officers were injured.
The Kyiv-controlled Donetsk regional administration said the rockets were fired from the separatist-held area of Horlivka, which is about 50 kilometers from Kramatorsk.
Eduard Basurin, a self-proclaimed separatist defense official, said the rebels "did not strike Kramatorsk" and contended that it was out of their range.
U.S. Ambassador to Ukraine Geoffrey Pyatt condemned the attack.
He wrote on Twitter: "We condemn Russian-backed eparatist shelling of civilian areas #Kramatorsk."
LATEST! President Petro Poroshenko says rockets have hit Ukraine's military headquarters and a residential area in the eastern city of Kramatorsk, and police say at least one civilian has been killed.
Here is today's situation map of eastern Ukraine by the National Security and Defense Council: