No. If the search warrant is invalid and they illegally searched you or someone you know (like without reasonable cause, or without the warrant) then they can't use any evidence against you. To the best of my knowledge, anyways.
I don't know how many ways a search warrant can be wrong though...if they were searching for like, pot, but found cocaine, they CAN use that though. Or a gun, or something like that. If they have the warrant, they can use it. If they searched without the warrant, its invalid and inadmissible 100%.
A Search Warrant
Police obtain a search warrant by presenting evidence to a judge or magistrate that shows probable cause that a crime has been committed and that evidence related to the crime is likely to be found in the location to be searched. The judge then decides whether to issue the warrant, allowing the police to search the specified location.
The police need a Search Warrant to enter a private residence in order to collect evidence unless they have reasonable cause.
To come into a home the police need a search warrant to search. Without the warrant the evidence is not admissible in court. It would be an illegal search.
In general, police can search your trunk without a warrant or probable cause if they have your consent or if they believe there is evidence of a crime in the trunk.
In the UK, the Police and Criminal Evidence Act 1984 provides the framework outlining the powers of the police, including the cases when a warrantless search can be conducted, and when a warrant is required.
Well, if the police department thinks that a cell phone may hold important evidence, then there is no need for a warrant. By the time the warrant is issued, the evidence may have been already destroyed or deleted.
Police officers obtain a search warrant by presenting evidence to a judge or magistrate that shows probable cause that a crime has been committed and that evidence related to the crime is likely to be found in the place to be searched. The judge then decides whether to issue the warrant, allowing the police to search the specified location.
Police searches of your home are not legal uness they have a warrant, which has to be signed by a judge. If the police want to search your home, and they do not have a warrant to do so, then you have the right to refuse to let them search your home. If they do so without a warrant, and without your permission, then anything they find cannot be used against you, since the evidence was obtained illegally.
Police issue a search warrant when they have probable cause to believe that evidence of a crime can be found in a specific location. This process typically involves presenting evidence to a judge or magistrate, who must review the information and approve the warrant. The warrant must specify the area to be searched and the items being sought, ensuring protection against unreasonable searches under the Fourth Amendment. Once obtained, officers can legally enter the premises to conduct their search.
If the police have a valid search warrant, they can enter your home regardless of whether the person on probation is present or not. The search warrant allows them to search the premises for specific items or evidence related to the drug possession case.
probable cause