Seven students identified as Polish citizens were reportedly arrested in connection with the use of foreign flags in Kano.
Sources said the suspects were transferred to Abuja for further interrogation.
The arrested foreigners were said to be students in one of the tertiary institutions in Kano.
The source said the students were picked as a result of security enforcement because of where they were with emphasis on the fact that the arrests were not targeted at the Polish.
The source said: “For the persons we have picked up from Kano, it was because of where they were found during the protest and the display of the foreign flag. That was two days ago and as a responsible security organization, we owe it an obligation to do some verification and ascertain basic reasons and circumstances for some cases.
“They were picked as a result of security enforcement because of where they were when the incident happened. It is not a targeted operation on behalf of Director General of DSS.
“As the foremost domestic security organisation, we believe we have to work in sync with all of you who are men of goodwill and our operations must be governed by democratic principles and protocol that emphasises freedom and human rights and of course, intelligence and in security governance, we obey all of this whether we are dealing with Nigerians or foreigners.
“But we have a plea, in the cause of the discharge of our duty, we will also see that some Nigerians definitely would want to use foreign lands as a lunch pad to attack domestic peace and stability. We plead that you do not offer your country to some person who may be deviance or have a terrorist inclination in today’s global pursuit because if anything happened in a country, it affects the others. Nigeria is a country with a large population and I believe that the support other countries will give will help us.”