A 34-year-old man has been arrested on suspicion of murder after an Eritrean student was knocked unconscious and later died in hospital.
Emanuel Simon was assaulted outside the Dubai Cafe, in Rusholme, Manchester, at 5am on 26 January.
He was taken to hospital, where he remained in a coma for two weeks. He died on 10 February.
A man handed himself in to police on Friday after Greater Manchester police released CCTV images.
Simon, 33, had moved to the UK 12 years ago and was studying to become a doctor. He was on a gap year and was planning to continue his studies in Leeds. His family said he was a “gentle giant” who had “big dreams and aspirations”.
DCI Carl Jones said: “This is a significant breakthrough in our investigation and I would personally like to thank those who supported and shared our appeal yesterday.
“Whilst we have made a further arrest, our work does not stop here and we will continue to meticulously investigate the circumstances of Emanuel’s tragic death in order to bring those responsible to justice.
“Our deepest condolences remain with Emanuel’s family and friends and whilst nothing can bring him back, I hope that our commitment to this case provides a measure of comfort to those that loved him.”