Police are still investigating the fatal stabbing of 75 year old Mohammed Saleem in Small Heath on Monday evening.
They have released CCTV of the night he was killed in the hope that witnesses will come forward.
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She was last seen in Warwick earlier today.
A man, reportedly armed with a knife and a baseball bat, was detained close to the event and police cleared the area as a precaution.
Tens of thousands of people are expected to line the streets this weekend.