According to Dungarpur Superintendent of Police, Gagandip, the foreign nationals had visas for visiting Mumbai, Surat and Jodhpur.
"They were supposed to board the Thar express on June 14 from Bhagat Ki Kothi area of Jodhpur," Gagandip said.
However, flouting visa rules, they came to visit the Galiakot shrine in Dungarpur district and were detained by Chitri police on Saturday.
The SP said that the home ministry has been informed about the development and the district police is awaiting instructions for further action.