DPR terrorists took responsibility for Mariupol shelling and announced attack on city. VIDEO

Leader of the DPR Alexander Zakharchenko announced that the terrorists began an offensive on the city of Mariupol on Saturday.

Censor.NET reports citing RIA Novosti.

"Today, the offensive on Mariupol city has begun. It will be the best monument to all our dead," Zakharchenko said.

Read also: 27 Mariupol residents were killed and 97 injured - City Council

OSCE observers are working at the scene. US Ambassador to Ukraine has called the attack a brutal violation of the Minsk agreements.

Read also: Last night passed quietly after bloody shelling of Mariupol