Ive heard of police with a search warrant finding something non-related to the search warrant, and then issuing a new search warrant on the spot regarding the new issue.
Probable cause
No, a police officer cannot issue a warrant for your arrest only a judge or court magistrate can do that.
The police can only search your house and property with a search warrant or with your permission. Contrary to the belief of most people, the police have no right to search your property for someone who does or doesn't live with you without a warrant.
It keeps the police from being able to take your property or enter your dwelling indiscriminately. Meaning: under normal circumstances, a police officer cannot just take your property or come inside your house for no reason. He would have to appear before a magistrate and request a search warrant. Normally, courts will not issue a search warrant unless there is a valid reason to do so.
It would be hard, if not impossible, for them to open it without your key! They could issue a search warrant if they had probably cause to suspect that items contained in such a secured environment were illegal.
Search warrants, in the U.S., are provided by a judge or magistrate.
Many judges are state and federal judges, so perhaps their jurisdiction is extended beyond the county they are in. If a search warrant is presented to you by the police, you can be certain it has merit just as it stands.
Warrants are ISSUED by a judge or by the police
Probable Cause.
Probable cause to believe that an offense is, has, or is about to occur at a particular identifiable location. This is presented to a judge in writing, signed and sworn to by the applying officer (known as an affidavit), and if the judge agrees they issue a warrant.
Our lawyer said they can't but the police did it and the police in a surrounding state said they can arrest for it.
If you know what the warrant is in response to, correct the issue. For instance, pay the fine, contact the court that issued the warrant, or show up at the police station with a lawyer.