Woman robs downtown bank after threatening teller

A woman walked into a downtown bank branch this morning and fled with cash after threatening a teller.
The robber entered the Chase branch at 600 North Dearborn St. at about 9 a.m., handed a teller a note announcing the robbery and threatened harm if her demands weren't met.
She got an undisclosed amount of money and fled on foot.
She was described as white, between 25 and 30 and about 5-foot-7. She had brown hair and sported a ponytail. She wore sunglasses, a black sweatshirt, black pants, a baseball-type cap and carried a black purse.
She did not display a weapon.
Of the 59 bank robberies in the Chicago area this year, this is the second committed by a woman, said FBI spokeswoman Cynthia Yates. The first was dressed as a nun in a Palos Heights robbery, and she has been captured.