Prime Minister of Ukraine Arseniy Yatseniuk headed the meeting of operational headquarters gathered immediately after the massive missile attack on Mariupol on Saturday.
The press service of Ukraine's Ministry of Internal Affairs reported the news.
"Due to aggravation of the operational situation, Prime Minister of Ukraine gathered operational headquarters consisting of National Security Council Secretary, Interior Minister, key government ministers," the statement said.
The officials informed that priority measures have been taken to assist the victims.
According to information received at 13.00 on Saturday, 15 civilians were killed and 76 were wounded during massive Grad missile attacks on residential areas in Mariupol. Also, one Ukrainian National Guard soldier was killed and two National Guard soldiers were wounded in the attack.