Saw it on OTT. The murderer was shown as boarding the bus, and when taking money out of his pocket for the bus ticket, a bunch of keys is seen falling out of his pocket. These keys were subsequently chucked out of the bus window and landed on a glass cabinet of a tea shop, breaking the glass. However, while recreating the scene with the murderer, he is shown to have lost these keys and hence poured kerosene and set fire to the door of the bedroom where the corpse was lying, so that he could retrieve a mobile phone. Excepting this scene which was extremely nonsensical, everything else about the movie was reasonably good.