March 2, 2015 5:25 pm ISIS Allegedly Threatens Twitter Co-Founder Twitter said Sunday night that it was working with law enforcement agencies to investigate whether purported ISIS-related threats against co-founder Jack Dorsey were real. Mark Matthews reports. US & World Videos 2:59 2 San Jose police officers shot, injured in gunbattle at hotel 1:46 Pursuit standoff causes traffic backup in Solano County 3:23 UC Davis finds brain sizes are growing 3:36 Waymo expands driverless taxi service 5:21 A closer look: 2 police officers shot, injured in San Jose
