When Sartraj shoots Shamshull, the blood trickle (from Katekar's stabbing) runs down the centre of Sartraj's nosebridge. In the following shot, there is no trickle down the centre, but now it's to the left side of the nose.
Before Katekar is being cremated, the camera pans around him and we can see that there are no signs of injury on his neck. He was killed by stabbing on the left side of neck.