From the San Francisco Chronicle:

Slaying of 4 leaves popular Hayes Valley neighborhood aghast

By Hamed Aleaziz, Henry Lee and Jaxon Van Derbeken Updated 6:35 pm, Saturday, January 10, 2015

Police in San Francisco scoured the city Saturday, searching for killers who gunned down four men in what likely was a gang-related attack in Hayes Valley late Friday. …

“Right now it looks like an all-out assault on these guys,'” said Lt. Toney Chaplin of the SFPD homicide detail. “It’s hard to pin down” what might have motivated the attack, he said.

He said the victims were all adults in their 20s. …

No arrests have been made. San Francisco police described a possible suspect vehicle as a newer-model silver Scion that could have been heading toward Highway 101.