Prize-wining pooch poisoned

A 3-year-old Irish setter who competed at London's Crufts dog show was poisoned to death, according to police. CBSN's Vladimir Duthiers and Meg Oliver show us what veterinarians found inside the dog's stomach.

ISIS threatens Twitter CEO

Law enforcement officials are looking into new ISIS threats directed at Twitter. ISIS uses social media to reach potential recruits and disseminate propaganda. CBSN's Anne Marie Green and Vladimir Duthiers are joined by CBS Justice correspondent Jeff Peges with the latest details.