"Hungary is not respecting Europe's common values so the European authorities need to have a serious discussion, even a stern discussion with its officials," he added.

Frances' top diplomat also denounced the ways media is reporting on migrants which they considered as "merchandise, products," adding "we should always keep not only in mind but also in heart that they are men, women and children with their suffering, their hope."

To Phillipe Douste-Blazy, special adviser to the UN Secretary General and also a former French foreign minister, the migration crisis in Europe was a "catastrophe."

"We have to go back to the the darkest days of World War II to see conditions like these ...," he told the news channel BFMTV on Sunday.

"Migrants come because they are fleeing extreme poverty which leads to corruption, violence, and civil war and we are responsible because we have always known that there are now two billion people on earth who earn less than 1.50 dollars a day," Douste-Blazy said.

According to the former French top diplomat, the solution is not building walls. Rather, he argued that if "food, education, drinking water, health, and toiletries are developed for every human being in the world, there will be much less migration."

European interior and justice ministers will discuss immigration in an urgent conference scheduled for Sept 14 in Brussels "in order to assess the situation on the ground, ongoing political actions and to discuss new initiatives to strengthen the European response" to the flow of migrants.