Ghislaine Maxwell may not be someone that we have a lot of sympathy for. If she is guilty of what she is accused of, her sentence will be long. That is not the point of this post.
The Daily Mail published a article today that outlines how the FBI located Ms. Maxwell. They got a search warrant that allowed them to use cell phone metadata in their effort to locate her. That data used GPS and cell tower use data. With that the FBI was able to narrow their search to a one square mile in New Hampshire.
Another warrant allowed them to use a "stingray", a device that mimics a cell tower causing phones to provide information about location and registered user automatically. They used that within the narrowed search area and located her phone's exact position.
It took less than 24 hours from the issuing of the warrant to find and arrest Ms. Maxwell.