UK raises terror-threat level as Manchester mourns attack
The United Kingdom is mourning the victims of a suicide bombing. Twenty-two people were killed, including an 8-year-old girl, Monday night at the end of a pop concert. The attacker has been identified as a Briton of Libyan descent, and police have raided two sites and arrested one man in connection. Hari Sreenivasan learns more from special correspondent Natalie Powell of Feature Story News.