Asylum seekers from Algeria, Syria and Pakistan, they had been captured by the Croatian police attempting to cross the Bosnia-Croatia border into the EU, and brutally beaten before being sent back. Sami, 17, from Kobane, gave the Guardian his footage, which appears to provide compelling evidence of the physical abuses, supposedly perpetrated by Croatian police, of which migrants in the Bosnian cities of Bihac and Velika Kladusa have been complaining.