Ian Wright said his family are "safe" as he arrived home from Brazil, adding: "All I want to say, really, is that my missus, my girls, everyone's safe. The police are trying to get on doing what they are doing. She's feeling good that I am back."
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The threat level has been raised to critical by MI5's Counter-Terrorism Analysis Centre.
Sam Allardyce has quit as manager of Crystal Palace and retired from football management.
Authorities named Salman Abedi as the suspected attacker who detonated a bomb at the Manchester Arena.