BahawalpurDaud drowned after constables Muhammad Khan and Aurangzeb allegedly beat him at a canal bridge.
A murder case against police is rare because the same station controls the evidence and the report.
Police say Daud jumped in while fleeing arrest as a suspected drug peddler, and the two constables remain unarrested.
Whether Pakistan’s courts convict, not dismiss, the case will test that rarity.
Sources: Dawn