The four university students died at the scene on Magdalen Street at around 4.40am on Saturday

Lamdaun Armitage’s body was found by a group of walkers in a Yorkshire Dales stream in 2004

Dr Shoo Lee said he ‘wasn’t happy’ at how his research was used to convict Lucy Letby

Prime Minister Justin Trudeau said he would ‘not back down in standing up for Canadians’