Humanitarian corridors from the Ukrainian city of Mariupol will be opened from 10 a.m. Moscow time (0700 GMT) on Monday, Mikhail Mizintsev, head of the Russian National Defense Control Center, said Sunday.

Up to 130,000 civilians, including 184 foreigners from six countries, are "currently held hostage in the city," the Russian Defense Ministry said in a statement, citing the official.

"In order to save human lives and preserve the infrastructure of Mariupol ... Russia will open humanitarian corridors from Mariupol in the eastern and western directions upon the agreement with the Ukrainian side from 10 a.m. Moscow time (0700 GMT) tomorrow, on March 21," Mizintsev said.

Russian forces and Donetsk's units will "declare a 'complete silence regime' and guarantee its observance from 9:30 a.m. Moscow time," he added.

Ukraine has rejected the ultimatum to surrender, its deputy prime minister told Ukrainian media Monday.

"There can be no talk of surrendering weapons. We have already informed the Russian side of this," Iryna Vereshchuk told the Ukrainska Pravda newspaper. 

"It's a deliberate manipulation, and it's a real hostage situation," she said of the demand. 

(With input from agencies)