The same gun was used to kill journalist-activist Gauri Lankesh and rationalist M M Kalburgi in Karnataka, the state forensic science laboratory has confirmed in a report, sources in the SIT said.

The forensic report submitted to the Special Investigation Team (SIT) probing the killing of Lankesh, is a part of the first chargesheet filed recently by it naming K T Naveen Kumar as an accused. This is the first official confirmation of the link between the two killings, which happened after a gap of two years of each other.