David Cameron has phoned German Chancellor Angela Merkel to discuss the "spiralling violence" in Ukraine, a Number 10 spokesperson said.
The Prime Minister called Chancellor Merkel earlier this afternoon to discuss the appalling situation in Ukraine.
They are both extremely concerned by the spiralling violence. They agreed that the immediate priority must be to stop the violence and that President Yanukovych has a particular responsibility to help de-escalate the situation by pulling back government forces.
The Prime Minister plans to speak to more leaders in the next 24 hours and Ukraine will feature on the agenda of the PM’s bilateral with Dutch Prime Minister Mark Rutte tomorrow afternoon.
Ukraine's interim President has expressed concerns about signs of separatism as opposition in Russian-speaking regions grows.
Hundreds of Ukrainians and journalists flocked to the presidential palace, as reports emerged that President Yanukovich had left the city.
Vitali Klitschko was met with boos from anti-government protesters, as he attempted to convince them a peace deal is best course of action.