New Delhi, Sep 5 (IANS): A Delhi Police head constable has been booked for taking a bribe for not issuing a challan after a video recording of his act was sent to Delhi Police's helpline number, police said Friday.

The complainant, whose identity police have withheld, forwarded the video recording via WhatsApp to the vigilance helpline number 9910641064.

The helpline was started Aug 6 this year so people can file complaints against corrupt Delhi policemen.

The complainant made the recording Thursday.

A case under the Prevention of Corruption Act was registered Thursday against head constable Ramachandran, attached to the traffic police, and an investigation is underway.

The video clip shows the head constable, wearing traffic police uniform, coming with an e-challan machine and a vehicle's registration certificate in hand.

The video shows the head constable reaching the person (caught for traffic violation) but without any challan receipt and taking two currency notes of Rs.100 denomination each from the erring commuter.

It also shows the person then enquiring from the head constable: "Ab challan to nahi hoga na, kahin challan na aa jaye" (hope challan will not be issued now).

Deputy Commissioner of Police (Vigilance) Sindhu Pillai told IANS: "A total of nine policemen of the ranks of constable to sub-inspector and a home guard have been booked in six cases under the Prevention of Corruption Act from Aug 6 till today (Sep 5)."