The CD will be sent for forensic tests to verify its authenticity.
Delhi Police Crime Branch has constituted a special team to probe the "objectionable" CD controversy which led to sacking of AAP minister Sandeep Kumar.
A delegation of Delhi BJP leaders on Thursday met Delhi Police commissioner Alok Kumar Verma and lodged a complaint against the sacked AAP minister, Chief Minister Arvind Kejriwal and Deputy Chief Minister Manish Sisodia, accusing them of "misusing their public authority against women".
After their complaint, the probe was handed over to Crime Branch and it has been learnt that a team has been formed to investigate the matter.
Taj Hassan, special commissioner of police (crime) said, "A team lead by DCP (Crime) Bhishma Singh will probe into all aspects of the case. We will take action as per law."
The CD will be sent for forensic tests to verify its authenticity. The team has begun probing the source of the CD and how it was circulated, said a senior police official.
The team will be investigating whether the women in the CD were victims or they were a party to the episode. Mr Kumar might also be called for questioning, police said.
Mr Kumar, social welfare minister in AAP government, was sacked by Mr Kejriwal on August 31 after a CD purportedly showing him in a compromising position with women was made public. The decision to sack the minister was taken at a high-level meeting attended by top AAP leaders.
Mr Kumar, however, alleged he was being targeted under a "conspiracy" as he was a Dalit and demanded a probe into the issue.