Teen stabbed on SF bus was allegedly attacked by 4 suspects

Four attackers are wanted in connection with the stabbing of a 15-year-old on a San Francisco bus on Monday evening, according to city police. Subscribe to KTVU's YouTube channel:    / @ktvufox2   KTVU delivers the best in-depth reports, interviews and breaking news coverage in the San Francisco Bay Area and California Watch KTVU's newscasts on https://www.ktvu.com/live Download KTVU's news and weather apps for free at https://www.ktvu.com/mobile-apps Subscribe to KTVU's newsletter at https://www.ktvu.com/newsletters Follow KTVU on Facebook:   / ktvu   Follow KTVU on Twitter:   / ktvu   Follow KTVU on Instagram:   / ktvu2