[5] Following an increased influx of asylum-seekers and migrants into the Schengen Area despite the Dublin Regulation, Hungary stated that the EU was "too slow to act", and started construction of the barrier in June 2015.

[6] According to BBC News, "many of the migrants currently in Hungary have been refusing to register there, in order to continue their journeys to Germany before seeking asylum".

There is a hastily constructed outer fence made up of three rows of razor wire, scheduled to be completed by the end of August 2015.

[16] The slow pace of the fence's construction led to the resignation of Csaba Hende, the Hungarian defence minister, on 7 September 2015.

At this point, some of the migrants began tearing apart a decayed structure, to obtain chunks of concrete which, along with rocks were hurled at police as other rioters built debris fires, filling the air with smoke.

[5] On 28 April 2017, the Hungarian government announced it had completed a second fence, 155 kilometres (96 mi) long, on the Serbian border.

In 2015, Hungary and Slovakia asked the Court of Justice of the European Union to annul the EU decision to relocate migrants.

On 31 August 2017, the Hungarian government requested that the European Union refund half of the border barrier costs (€400 million).

[38] In mid-September 2015, Hungary was considering a barrier on part of the Romanian border in case of a shift in the migrant flow through this area.

[39] As of March 2016[update], everything is in place if Hungary decides to build a border barrier on the Hungarian–Romanian border—the military is "only waiting for the command from the government".

[42] Source: Police.hu - Border information(original URL) According to a correspondence published in Nature journal, the border barrier can entangle animals in razor wire and endangers wildlife by blocking animal migration, jeopardizing connectivity of species populations by habitat fragmentation[43] (such as the lesser blind mole-rat[44]).