By Sara J. Berman. Arrest Warrants: What's in Them, How Police Get Them. Large police departments have warrant sections. Police must convince a neutral judge that, more likely than not, a crime has been committed and the subject of the warrant was involved. Police departments do not serve CIVIL papers, they enforce CRIMINAL laws and serve criminal papers and warrants.
As far as using the internet, they do that along with a lot of other devious means to get you. Search warrants have a shelf life. The next thing to do is retain an experienced criminal defense attorney who regularly appears in the courthouse at issue to go with defendant to the courthouse to recall the warrant voluntarily, rather than wait for the police to serve the warrant as described above. Define "cop." No, warrants do not expire in New Jersey. That is the information upon which they are based upon must be timely and fresh. Once you have a warrant out for your arrest, you need to serve your time.

That is all they do, serve warrants. Any police officer can arrest a person wanted on a warrant if he comes into contact with that person. An arrest warrant is an official document, signed by a judge (or magistrate), which authorizes a police officer to arrest the person or people named in the warrant.