Police team have made the sketch with the help of CCTV footage and eyewitness accounts.
The SIT is looking out for suspect in white shirt and black trousers riding a bajaj pulsar ride. According to the sketch released the suspect can been seen wearing hand-gloves and face masked with a helmet.
The Bengaluru Police suspects the biker was doing a recce prior to Lankesh’s killing.
Lankesh was shot dead by unknown bike-borne criminals outside her residence on September 5 evening. Her killers had pumped in at least seven rounds of bullet into her body from a close range.
Police then had said that a man wearing a helmet was recorded on cameras as he was shooting her.
The Bengaluru Police last week had released CCTV footages and sketches of the suspect.
The sketch released by the SIT is an enhanced close-up. The picture shows shows the facial features of the killer.
Last week, the Karnataka government had said that the killers have been identified but evidence is still being collected to prove their guilt.