Authorities Identify Suspect Accused of Stabbing Good Samaritan in San Francisco

Authorities have identified the suspect accused of stabbing a good Samaritan following an assault in San Francisco Tuesday. Robert Handa reports. Stay connected: Follow us on Twitter: Like us on Facebook: Follow us on Instagram: Add us on Snapchat @NBCBayArea Catch up on all the day’s news: Download our app: On iOS: On Android: