They said Maxwell has shown a skilled ability to hide. When FBI agents went to arrest Maxwell at a mansion in New Hampshire on July 3, instead of obeying the agent’s order to open the door, Maxwell fled to another room and closed the door behind her, according to the court filing. After the FBI breached the door they found Maxwell inside and arrested her.

“As the agents conducted a security sweep of the house, they also noticed a cell phone wrapped in tin foil on top of a desk, a seemingly misguided effort to evade detection, not by the press or public, which of course would have no ability to trace her phone or intercept her communications, but by law enforcement,” prosecutors wrote.
— Read on amp.cnn.com/cnn/2020/07/13/us/new-york-ghislaine-maxwell-court/index.html