WASHINGTON (AP) -- These days it seems that some people just can't go anywhere or do anything without a cell phone to their ear.In northern Virginia, police say they're looking for a woman who's been holding up banks while chatting on her phone."This is the first time that I can recall where we've had a crime committed while the person was using a cell phone," Loudoun County sheriff's spokesman Kraig Troxell told The Washington Post in a story published Friday. "The question would be whether anyone is on the other end of the line or not."Investigators believe the woman has hit four Wachovia bank branches in recent weeks in Fairfax, Loudoun and Prince William counties.In three of those bank jobs, she was talking on a cell phone, while showing the teller a box with a holdup note attached to it. In the most recent holdup, on November 4, in Ashburn, the robber showed the teller a gun.The woman is described as well-spoken, with a slight Hispanic accent.Investigators say they're not sure if she's actually talking to someone on the phone or just pretending. They also won't speculate on why she's chosen only Wachovia branches.Copyright 2005 The Associated Press. All rights reserved.This material may not be published, broadcast, rewritten, or redistributed.