The UN refugee chief has said, Europe must help tackle a crisis situation in Greece where roughly 5,000 child migrants live in danger of exploitation and violence.  United Nations High Commissioner for Refugees, UNHCR chief Filippo Grandi was talking to reporters in Athens after a two-day visit to Greece.<br />''<br />''Hundreds of migrants arrive on the Greek islands from Turkey every day, adding to roughly 39,000 already housed in island camps and 22,000 more on the mainland. Grandi said, he found living conditions in the camps he visited on the island of Lesbos extremely disturbing with generalised tension often resulting in violence, especially against minors.<br />''<br />''Last week, the Greek government said it had failed to persuade other EU countries to help host around 3,000 of the children.<br />''<br />''Rights groups have criticised Greece's new conservative government for its response to the situation. Greek officials have come under fire from political opponents recently for saying asylum seekers were not entitled to international protection if they do not come from war zones.<br />''<span style="color: #222222;"><br />''Protests have also taken place in several towns in northern Greece in recent weeks to block attempted relocations of asylum seekers. </span><br />