In the eastern Ukrainian city of Mariupol, rockets streamed into a market, two schools, homes and shops, killing at least 30 people.

Ukraine's president ended a trip to Saudi Arabia early and rushed an emergency meeting so that the government could figure out how to respond.

The rebels turned down a peace deal and announced a versatile offensive attack against the Kiev government the day before the rocket attacks. The rebels planned to increase their territories. 

European officials have not been able to reach a resolution in the fighting in eastern Ukraine because of the rebels. Since April, the struggle has killed almost 5,100 people. 

Mariupol is between Russia and the Crimean Peninsula, and it is located on the Azov Sea. 

The area was prone to heavy fighting in the fall, which garnered fears that the city would be taken over by separatist forces. 

"The area that came under attack was massive," Mariupol Mayor Yuriy Khotlubei said, according The Assoiciated Press. "The shelling was carried out by militants. This is very clearly Russian aggression that has caused terrible losses for the residents of the eastern part of our city." 

Though it is known that at least 30 have died, there was no more information about how many died in each location. 

The Mariupol city council told residents they should not panic, and it denied that Ukrainian forces were going to withdraw, according to Fox News. 

The council said in a statement, "On the contrary, all units are on fully battle-ready. Security measures in the city have been strengthened."

There have no reports of armed separatists making their way to the city.