While European leaders and the United States are considering tightening the noose on Russia in a new package of sanctions, there is no letting the tempo of violence subside by the pro-Russian separatists in Ukraine. The Ukraine government, Reuters reports, was attacked by the separatists, on Saturday, in Mariupol in eastern Ukraine. The attack was the first notable violation of the seized fire agreements brokered between Kiev and Moscow. Both countries have hoped the ceasefire would de-escalate the five-months violence and present a peace road-map. A truck, a gas station and an industrial facility were reportedly set ablaze in war-torn town. Violence lulled in Mariupol and Donetsk after the ceasefire was reached, but the pro-Russians lit a stick to the petrol and forced pro-Government militia volunteers on tanks and trucks to retreat from their taken positions.