Officers from Merseyside fire and rescue service were amongst residents in Southport laying floral tributes following the knife attack on Monday which killed three children. A 17-year-old boy, born in Cardiff, is being held on suspicion of murder and attempted murder following the attack in Hart Street, Southport, on Monday, 29 July. Report by Kennedyl. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn