itself. video of them purchasing a backpack and why there are still people on heightened alert and how this could relate to other bombings. greg palkot is live in manchester where a moment of silence for the victims was just held. greg? [applause] >> very, very emotional, folks. now, you are hearing applause. the applause of the thousands of people who are gathered around this memorials of flowers. they have waited for a minute, rigger the 22 dead. 64 still in the hospital. many of them fighting for they're lives after that dastardly attack monday night on the con verse here in manchester. this as the police very much are searching for who is behind and what is behind the attack. i'm going to pause for a moment. we're just hearing a few words. more applause. it's a very dramatic scene here. this is a city that has been racked by this violence. a city that has pulled together. the second biggest metropolis