"If anyone's sentiments have been hurt, it is clarified that there was no intention of the same and it is regretted," a spokesperson of the Post Graduate Institute of Medical Education and Research (PGIMER) said.
The official said the measure were taken to ensure the "integrity and fairness of the entrance examinations and never intended to hurt the religious sentiments of anyone."
"These instructions were widely circulated and were printed on the admit card, and were available on the institute's website also," she said.
Parents of some Sikh candidates had alleged their children were asked to remove religious symbols like kirpan and kada to gain entry at some centres here for the PGIMER entrance test on Sunday.
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The candidates, who also included girls, were later allowed to take the test and were also compensated for the loss of time.
Earlier, condemning the incident, Shiromani Gurdwara Parbandhak Committee (SGPC) had requested Punjab Governor Shivraj Patil to take stern action on duty officers at these centres for "harassing" the Sikh candidates.