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Today the court heard that psychiatrists for the prosecution and defence were in agreement that the paranoid schizophrenic was unfit to stand trial for murder.
Speaking after the decision, Grace's devastated father Dr Sanjoy Kumar told BBC News: 'Justice has not been done for our daughter and she would be disappointed.'
The engineering graduate stabbed Grace O'Malley Kumar, fellow University of Nottingham student Barnaby Webber - both 19 - and school caretaker Ian Coates, 65 last summer.
Calocane stabbed Grace, fellow University of Nottingham student Barnaby Webber - both 19 - and school caretaker Ian Coates, 65, in a horrific city-wide rampage on June 13 last year.