A post-mortem examination into the death of an 18-year-old student, who was attacked at a bus stop, has given a inconclusive result.
Mariam Moustafa was attacked in Nottingham city centre on 20th February. She died a month later in hospital.
More tests will now be carried out to establish if there was a link between the assault and her death.
A 17-year-old girl, who was arrested on suspicion of assault occasioning grievous bodily harm, remains on bail.
Ms Moustafa was a Egyptian national, and the Egyptian embassy has called for those responsible for her death to be "brought to justice swiftly".