Many units carry portable fingerprinting devices that are linked to the Police National Computer (PNC), these are used to obtain suspect's fingerprints to confirm their identity. When a person has been arrested, fingerprints are taken the old fashioned way using ink and paper.
because you have suspects and they take their finger print and it is probley one of them
use fingerprints
Police could use black powder.
While interviewing suspects and handling complaints
Law enforcement may use subterfuge techniques such as undercover operations, sting operations, or decoy operations to gather evidence, conduct investigations, and apprehend suspects who are involved in criminal activities. Subterfuge can help law enforcement officers blend in with the criminal environment and gather information without arousing suspicion. However, there are strict legal guidelines that govern the use of such techniques to ensure they are used ethically and within the bounds of the law.
A police inspector quizzes suspects as part of his duties.
If they have a warrant.
One major use of fingerprinting is related to criminal investigations. fingerprints can often be used to identify the perpetrator of a crime. Fingerprints are used to identify unknown victims, witnesses or suspects, to verify records, and most importantly, as links between a suspect and a crime.
Clothing is normally porous(a drop of water will soak into it) so the answer is NO the police will not use the powder on clothes.
use police from a near by town to conduct the lineup
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An apostrophe means one of two things - either you're leaving out some letters (like can't means cannot or doesn't means does not) or you are indicating possession. If you put an apostrophe after the word suspects, you get suspects' which means "belonging to the suspects." An example sentence would be something along the lines of "The suspects' belongings are at the police desk."