International monitors say they have found a new type of Russian-made rocket system in rebel-held eastern Ukraine, according to BBC News.

The Organisation for Security and Co-operation in Europe (OSCE) spotted the powerful TOS-1 Buratino multiple rocket launcher in Luhansk.

A spokesman for the OSCE Special Monitoring Mission (SMM) to Ukraine told the BBC the discovery was particularly significant because of the damage the rockets could cause.

But the OSCE told the BBC the sighting on 25 September was the first it had on record.

Meanwhile, the leaders of Ukraine, Russia, Germany and France discussed peace efforts in Ukraine, with Paris and Kiev saying the pullout of light weapons would start on Saturday, October 3.

Moscow denies arming the rebels.

It also rejects accusations by Ukraine and the West that it is sending heavy weapons to the pro-Russian separatists in the Donetsk and Luhansk regions.

However, the Kremlin admits that Russian "volunteers" are fighting alongside the rebels.