A post-mortem examination on the body of County Donegal teenager Caolan Page is due to be carried out this morning.
The 19 year old from Upper Kildrum in Carrigans was discovered in Magazine Street, Derry, early on Saturday morning.
Meanwhile, thousands of people have paid their respects to the Donegal teenager on a Facebook page set-up in his memory.
The ‘RIP Caolan Page’ tribute site on Facebook has attracted almost 5,800 ‘likes’ since Saturday.
Caolan was taken to Altnagelvin Hospital after being found injured near the Walls on Magazine Street, Derry, at around 2am on Saturday.
Detectives were last night going through CCTV footage of the area where the St Columb’s College A-level student sustained his fatal injuries.
Police hope the images will help establish what happened to Caolan.
A post-mortem examination is due to be carried out in Belfast today.
Caolan’s own Facebook account was flooded with tributes from friends.