SPA - Thirteen Pakistanis, arrested in Poland for illegally entering that country, have been brought back to Pakistan by a chartered plane, officials said. None of the deportees was in possession of passport or visa for entering in Poland. Pakistan's Federal Investigation Agency (FIA) detained them on arrival at Islamabad International Airport for questioning. Before being sent back to homeland, the deportees were kept in various jails in Poland. Later, they were clubbed in Warsaw and were subsequently dispatched to Islamabad, officials said. During the preliminary investigation, the deportees informed FIA authorities that a network of human traffickers sent them to Moscow from Karachi on the pretext of taking them to Europe against a handsome amount of money received from each of them. However, they were arrested by Polish authorities for entering into that country without any permission or visa and were detained.