Police are seeking the public's help with a series of bank robberies that have occurred since March 22 in downtown San Francisco. According to SFPD:

In three of the incidents, the suspect approached a bank customer already at the teller window and placed a knife to the customer’s throat. While holding the knife, the suspect demanded and was given currency from the teller. The suspect then fled the bank. In one of the three incidents, the hostage victim suffered a non-life-threatening knife wound.

Egads.

The first incident happened March 22 at Citibank, 1801 Van Ness Avenue. The second robbery was on March 24 at the East West Bank at 743 Washington Street, where the suspect "held a knife to the throat of an Asian male customer at the teller window." On April 2, the thief hit the Wells Fargo Bank at 1160 Grant Avenue "and again held a knife to the throat of a customer, an Asian male." And on Monday, he attacked City National Bank, 150 California Street, where he "stood behind a 90-year-old Hispanic female customer at the teller window, and held a knife to her throat."

The suspect is described as a black male, somewhere around 30 - 40, 6', 175 lbs, black hair with mustache and goatee. During each robbery, he sported a dark baseball cap. Folks with information this dangerous rapscallion are urged to contact Inspector Phillip Wong, Criminal Investigation Unit, 415-553-1201, to call the Confidential Tip Line, 415-575-4444, or to use Text-a-Tip (TIP411 or 847411).