The San Francisco Police Department is hoping you can help them find the man responsible for a truly nasty Tenderloin crime.

On Friday, August 8, at about 9 p.m., an 87-year-old woman was walking on Leavenworth Street between O'Farrell and Geary Streets. That's when the fellow you see in the surveillance video stills above wasn't content "just" to rob her — no, he also threw her to the ground and dragged her, leaving her with multiple broken bones and bruises.

The elderly victim is presently recovering in a care facility, SFPD spokesperson Sergeant Danielle Newman says.

SFPD has had no luck finding the suspect, who's described as a 40-50 year old black man, standing from 5'10" to 6". He's described as having "a skinny face," and was clad in a knit cap and a dark-colored leather jacket. That's why they released these surveillance stills, in case you've seen him around. Have you?

Newman encourages anyone who has information on the suspect or crime to call the Tenderloin Police Station’s Sgt. Michael Zhang at 415-345-7300. You can even call SFPD's anonymous tipline at 415-575-4444 or by text at TIP411 with SFPD at the start of the message.