 Where the nationality of a person is not evident, the onus of proving whether a person is a foreigner or not lie upon the person himself.Anyone who believes that a foreigner has entered India, or who is the owner or managers of the property where a foreigner resides illegally, must inform the nearest police station within 24 hours of the presence of such foreigner.The Foreigners Act allows the government to detain a foreigner until he is deported back to his own country.