Answer:
This is a direct violation of the exclusionary rule, part of the 4th amendment.
Step-by-step explanation:
The exclusionary rule prevents the government from using most evidence gathered in violation of the United States Constitution. The decision in Mapp v. Ohio established that the exclusionary rule applies to evidence gained from an unreasonable search or seizure in violation of the Fourth Amendment. This is an example of the exclusionary rule, since the cops did not produce a warrant and gathered evidence illegally.