Michael Massoney

Investigators on the scene of a shooting in South San Francisco on December 22, 2010. (CBS)

South San Francisco Leaders See Progress In Curbing Gang Activity

A multi-agency sweep Thursday produced 13 arrests across the Bay Area. Many of those suspects are accused of belonging to the 500 Block-C Street Gang, the same group police have linked to a drive-by shooting in 2010 that killed three suspected rival gang members.