Police investigating the murder of an Indian student have said they are "not ruling out a racial motive" and that the killing is being classed as a "hate crime".
Anuj Bidve, 23, was gunned down at point-blank range as he walked with friends near their hotel in Salford, Greater Manchester, in the early hours of Boxing Day.
Chief Superintendent Kevin Mulligan, divisional commander for Salford, said: "We have not established a clear motive for the senseless murder of Anuj, and there is no definitive evidence pointing to it being racially-motivated.
"However, we are treating this as a hate crime based on the growing perceptions within the community it was motivated by hate."
Greater Manchester Police (GMP) said a 20-year-old man was arrested in the early hours.
A 16-year-old boy, two boys aged 17 and a 19-year-old man are also being held on suspicion of murder.