New Delhi: The controversy over the investigation in the Aarushi Talwar double murder case took a new turn with the surfacing of a video of a purported narco test being conducted on a discharged accused who claimed that a top CBI official had put pressure on him to own up the crime.

An hour-long video that had surfaced on Thursday on social media website Youtube shows Krishna, Aarushi's father Rajesh Talwar's assistant, purportedly saying that the then CBI Joint Director Arun Kumar asked him to own up the crime on the promise of getting his sentence reduced.