Criminal Prison - People on the move with criminal convictions are detained within criminal prisons on the Greek mainland, including asylum seekers in some cases. Prison populations are mixed, with Greek nationals detained alongside foreign prisoners. People charged for crimes related to smuggling make up Greece’s second largest prison population by crime, with 90% of this population being third country nationals. Athens airport detention facility - Within Athens Airport there are special holding facilities where people on the move may be detained prior to their transfer to another detention facility. detained persons reportedly experience severe overcrowding and poor hygiene conditions. Map of detention centers, camps and police stations in Greece. 6