The leader of Ceuta demanded on Monday the detention and expulsion of the thousands of migrants wandering the Spanish north African territory's streets after last month's mass influx from Morocco. But the thousands who remain -- including hundreds of unaccompanied children who cannot be summarily deported -- struggle to access food, water, shelter and sanitation while the tiny enclave's resources are overwhelmed. READ ALSO: Migrant children sleeping rough in Spain's Ceuta at risk of abuseAdvertisementTheir future has sparked a political battle between Spain's leftist central government and regions governed by the main conservative Popular Party (PP) and far-right Vox, which resist taking in unaccompanied children under existing legal provisions. Vivas called the situation "unsustainable", estimating that between 8,000 and 11,000 migrants were left in Ceuta, well above the government's figure of around 2,500. Reuniting the children with their families was "the priority", he added, without mentioning the possibility of expulsions.