Two things could happen here. It may either become favorable to the defendant because there is no further means of determining whether such evidence, as believed, would convince the average mind of somebody’s guilt beyond reasonable doubt. But on the contrary, if the prosecution establishes a prima facie case, then, the burden shifts to the defendant to produce evidence of actual tampering or substitution. In my opinion, the question whether a defendant be held on bail is immaterial to whether an evidence is found or not. Therefore, the gravity of the case will determine whether a bail could be granted or not.