International observers trying to monitor the ceasefire in the Ukraine are being led on an impossible game of 'hide and seek ' that could shatter the peace deal . Both pro-Russian rebels and government troops have been accused of concealing weapons from the Organization for Security and Co-operation in Europe ( OSCE ) which could threaten the treaty . Under the agreement heavy artillery should have been pulled back from the front line , but just last week the opposing forces were seen to be breaking the deal . International observers of the Organization for Security and Co-operation in Europe ( OSCE ) look at an armoured vehicle of the self-proclaimed Donetsk People 's Republic ( DNR ) The inspection by the international observers took place in 100km easts of Donetsk . Yesterday eye-witnesses saw two rebel controlled tanks pushing forward and days earlier Ukraine troops were seen transporting a tank and a large calibre gun close to the battlefront . In a bid to monitor the fragile ceasefire the OSCE has asked to know how many weapons each side has and where they are being stored . Armed with cameras and clipboards the international observers have been driving around eastern Ukraine looking for rocket launchers and artillery . 'Some information has been provided from both sides , but we still need substantial information , ' said Michael Bociurkiw , the OSCE mission spokesman . It is unclear to what extent the OSCE teams are able to decide on their own where to inspect . The monitors are also regularly complaining that they are not being allowed to travel through Ukraine freely . Sometimes they are made to wait at checkpoints , forcing delays , while in more extreme cases they are blocked entirely from reaching their destination . Mr Bociurkiw said even a short wait violates the verification process . 'Any delays are unacceptable in our books , ' he said . This week a group of inspectors travelled from Donetsk to Novoamvrosiivske , a village near the Russian border , to visit a cement factory in the rebel controlled territory . Here they scrutinized dozens of tanks , rocket launchers and howitzers taking photographs and making notes . As they made there way back fresh tracks could be seen indictating that a convoy of heavy machinery had passed through while the inspectors were engaged elsewhere . In a bid to monitor the fragile ceasefire the OSCE has asked to know how many weapons each side has and where they are being store . Journalists in the Ukraine who followed the tracks found two tanks in a multi-vehicle convoy that included truck-pulled cannons and troop carriers full of rebel fighters . Two days earlier a Ukraine solider had boasted that a cease-fire busting cannon was being taken towards the front line . Ukrainian military officials have at times conceded that they are refraining from a complete withdrawal of heavy weapons , citing what they say is rebel reluctance to do the same . 'We will not withdraw all our weapons , as we have no confirmation that the same is being done by the enemy , ' military spokesman Andriy Lysenko told reporters earlier this month . 'It would be wrong and criminal to leave our troops without any cover . ' Armed with cameras and clipboards that international observers have been driving around eastern Ukraine looking for rocket launchers and artillery . And Ukrainian authorities say artillery fire continues in sporadic clashes along the front line . Donetsk region police chief Vyacheslav Abroskin said a resident of Avdiivka was killed yesterday after a shell struck a home in the town . In addition , neither side is willing to agree that tanks fall under the weapons to be withdrawn , although the cease-fire clearly envisions their removal . The conflict in the Ukraine has already left more than 6,000 dead in a year .
Pro-Russian rebels and Ukraine troops accused of concealing weapons . Organization for Security and Europe trying to monitor both warring sides . Both have to remove heavy weapons from the front line as part of deal . Eye-witnesses told how the opposing forces were breaking agreement .