Bulgarian police are helping Hungarian colleagues mount border patrols amid suspicions that gangs from Bulgaria are heavily involved in people trafficking – exploiting refugees and migrants arriving from Syria and elsewhere.<br /><br /> Officers are working together at Hungary’s frontier with Serbia where migrants continue to arrive, day and night.<br /><br /> For those who make it across the border, their ordeal is far from over.<br /><br /> People have been filmed escaping from a Hungarian reception centre in the border area of Roszke, climbing over a fence, pursued by security forces.<br /><br /> Some manage to make it over the fence, while family members get caught and are left behind.<br /><br /> VIDEO: Migrants Escape From Hungarian Camp http://t.co/AhxumxMgE2 pic.twitter.com/vfAgNVsl5h— RFE/RL (@RFERL) 30 Août 2015<br /> <br /><br /> Many migrants fear being fingerprinted in Hungary. Under EU rules, if stopped elsewhere they face being returned to the country as their official point of entry. <br /><br /> Once In Hungary and the EU’s visa-free Schenge