Police officers are specially trained to read body language. If they think someone is acting strangely around their presence, for example avoiding eye contact or walking quickly, then officers have the power to stop and search that person on suspicion on criminal activity. They will ask that person for their details and to identify themselves too, in case there is an outstanding warrant on them.
They do it to protect you, the member of public, from harm.
A search order must be signed by a judge to be valid. Police cannot conduct any search for which a search order is needed if it does not have a valid signature.
I'll give an example. When police come knocking at your door, demanding you to open up and let them search the house, you can say, "No, I need to see your search warrant." The police MUST have a search warrant in order to search your house and if they don't, you can kick them out! :) Hehe.
The police got a search warrent in order to search the suspect's house. The suspect would not allow the police to search his home without a search warrant.
Probable cause
Probable cause.
In order to search through someone's home, police officers must aqquire a search warrant, which is just a slip or piece of paper signed by a judge that gives them legal rights to go searching through a person's home. They also must have some sort of evidence on why they are to search someone's home, such as drugs, leads, etc.
Before the police can obtain a search warrant, they must demonstrate probable cause to a judge. This means they must provide sufficient evidence to show that it is likely that a crime has been committed and that the search will uncover evidence related to that crime.
search warrant
In order to search you the police require reason to be suspicious. If someone makes such a claim and its believable the yes they can,
A Search Warrant
Search warrantsSearch warrants are required under the protections of the Fourth Amendment. For a search warrant to be obtained by the police there must be:Sufficient reasons for the search: A warrant may not be issued unless there is sufficient evidence, reason or rationale for the search. Search warrants may not be issued randomly.Stated object of the search: A search warrant must specifically declare what the police are looking for.Location of the search: Search warrants must specify the areas to be searched. For example, a search warrant may include an individual's house, but a separate warrant may be needed to search the same person's garage.
They must provide a judge with probable cause to do a search.