SAN FRANCISCO (KPIX 5) – San Francisco police hope someone recognizes the two young women seen carrying out a mugging on a San Francisco Muni light rail vehicle last week.

In surveillance footage released Monday, the attackers – who police say appear to be 13-14 years old – approach a seated 68-year-old, punching her in the face and then taking off with her purse and cell phone.

READ MORE: UPDATE: 1 Dead, 5 Wounded in Saturday Evening Shooting at Oakland's Lake Merritt

The attack happened last Tuesday evening near 3rd and Carroll Street aboard the T-3rd line.

READ MORE: UPDATE: PG&E Restores Power To More Than 50,000 East Bay Customers

Anyone with information is asked to contact SFPD.

MORE NEWS: Fire at San Francisco Tenderloin Apartments Injures 15; Dozens Saved by Occupants' Heroism

(Copyright 2013 by CBS San Francisco. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)