again..what did shariah courts find that civil courts did not see. There should be a disclosure of that.
on the DNA evidence only way possible would have been had they either had him in suspicion and were then able to compare dna sample at scene of crime to his dna, or they had info on his in the system already.
There are cases in US which is df much more advanced than pakistan in terms of police work, where the dna of the perp is in police records but they dont have any suspects that it matches…
the cabbie of course would have been identified, but to prove that this guy commited the crime would have been close to impossible.