If there is a possibility of collecting evidence from the hands, what should be done to them?

Bagging the hands is the correct procedure when there is a possibility of collecting evidence. This technique is essential to preserve any trace evidence that may be present on the hands, such as gunshot residue, blood, or other forensic materials relevant to an investigation.

When hands are bagged, it prevents the loss or contamination of evidence that could occur if the hands were left exposed or washed. Washing the hands would eliminate any potential evidence, as the action would remove trace elements and forensic details crucial for analysis. Leaving the hands exposed might expose them to environmental factors that could cause further contamination or degradation of evidence. Photographing the hands is a useful step in documentation but does not prevent the actual loss of the evidential material that could be collected from them.

In summary, bagging the hands is the proper action to ensure the preservation of evidence, allowing forensic experts to accurately analyze any materials that might be present.