"We are merely inspecting the CD. If we find any content which might be related to any irregularity, the CD shall be forwarded to the concerned department for investigation," Joint Commissioner of Police (North) Sanjay Singh said.
Arora (26), who claims to be the in-charge of Punjab unit of Aam Aadmi Sena, continues to be questioned at Model Town police station in northwest Delhi, said an official privy to the investigation.
Arora, who is unmarried, is a resident of Rama Vihar area in outer Delhi's Rohini sub-city. The police have also recovered some papers which she had thrown near the dais at the venue, before she was whisked by the police.
Arora was arrested in the wee hours today after the police received permission from a magistrate to do so. She soon acquired bail by signing a personal bond and appeared at a court in the morning, which sent her to one day police custody.
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Rai said that the documents belong to Petroleum and Explosives Safety Organisation (PESO) which comes under Ministry of Commerce & Industry.
Earlier in the day, Delhi Police Commissioner B S Bassi met Union Home Minister Rajnath Singh and is believed to have briefed him about the incident.
After the meeting, he told reporters that "necessary arrangements were made at the venue and there was no lapse in security".