The Police Ombudsman's Office has released additional information and issued a fresh appeal for witnesses following the death of Gerard McMahon after an incident in Belfast city centre last Thursday morning (8 September).
Mr McMahon (36), from the Short Strand area of the city, died after being arrested at around 5am following an altercation close to the Grand Opera House on Great Victoria Street. CS spray was used by police during the incident.
Investigators have renewed their appeal for anyone who saw what happened during that incident to contact them,
They have also appealed for information from anyone who may have seen Gerard at a number of locations in the city centre between 2am and 5am.
They include Patterson's Place, off Donegall Square East, where he left a nearby nightclub shortly after 2am. At that stage he was wearing a turquoise colour Firetrap T-shirt, black jeans with a yellow belt, and black trainers.
He then moved to the Howard Street area, behind the City Hall, and was there between approximately 2.30am and 3am, by which stage he was partially undressed.
Investigators have obtained evidence that Gerard then moved to the Friendly Street area of The Markets, and was there between roughly 3.15am and 4.30am, before making his way to Great Victoria Street via Hamilton Street.
He was also seen in Amelia Street and Brunswick Street, close to Victoria Street.
Senior Investigating Officer Paul Murphy said: "We are keen to hear from anyone who saw Gerard at any of these locations or elsewhere in the city centre between 2am and 5am last Thursday.
"We have obtained a significant amount of CCTV footage, but if anyone has any other information or material which may assist our enquiries, we would be grateful if they could contact us."
The Police Ombudsman's freephone witness appeal line is 0800 032 7880.