MANCHESTER, England (AP) - Prime Minister Theresa May says Britain's threat level from terrorism has been raised to critical - meaning an attack may be imminent.

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May says Salman Abadi, the suicide bomber who killed 22 people at a concert in Manchester, may have been part of a bigger network.
  
She said Abadi was born and raised in Britain.
  
The level previously stood at the second-highest rung of "severe" for several years.
  
May said critical status means armed soldiers may be deployed instead of police at public events such as sports matches.