The United Nations is continuing to record as many as 5,000 migrants a day making the sea crossing from Turkey to Greece. <br />At the same time, controls at Greece's northern border with Macedonia are being tightened. <br />People who are not from Syria, Iraq or Afghanistan are now being prevented from travelling further north. <br />It means an increasing number of people are attempting to make the journey illegally, as Damian Grammaticas reports.
