A picture of the British woman killed in a plane crash in Kazan, Russia, yesterday has been released.
Donna Bull was described by colleagues at Bellerbys College as "a very popular and well-respected member of staff".
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The Islamic centre where the Manchester suicide bomber is thought to have prayed says the attack "has no place in Islam or any religion".
German chancellor Angela Merkel and Indian prime minister Narendra Modi among those to praise "great spirit" of Manchester people.
The bomber's identity has been confirmed by Greater Manchester Police.