A second man has been arrested on suspicion of murder after the death of footballer Jordan Sinnott.
A 21-year-old man was arrested by Nottinghamshire Police on Sunday.
The force said another 21-year-old man, arrested on suspicion of murder, and a 27-year-old man, arrested on suspicion of grievous bodily harm, remain in police custody.
Mr Sinnott, who played for Matlock Town on loan from Alfreton Town, was found unconscious with a suspected fractured skull in the early hours of Saturday morning.
He died in hospital, after being taken into care following a disturbance in Retford, Nottinghamshire.
An investigation has been launched into his death.
Officers initially responded to reports of up to eight men and women being involved in a disturbance in a pub car park shortly after 11.25pm on Friday.
You weren't just a footballer, you were our friend and brother. You gave us incredible memories and scored your first career hat-trick in your final game for the club.
Rest easy Jordan, we love, miss and will never forget you. pic.twitter.com/JB8ZCThCSZ— Matlock Town FC (@Matlock_TownFC)January 25, 2020
They were later called to assist ambulance crews attempting to treat Mr Sinnott, after he was discovered unconscious with a suspected fractured skull following a subsequent incident at around 2am in Market Place.
Mr Sinnott died in hospital shortly before 6pm on Saturday, Nottinghamshire Police said.
Detective Inspector Justine Wilson, leading the investigation, said: "Retford is a fantastic town with a close-knit community, and I would like to appeal directly to that community to come forward. Jordan's family deserves answers, so please come and talk to us.
"We are making progress in the investigation, but we have unanswered questions.
Our hearts are broken.
We love you Sinbad.
Rest in peace ❤️ pic.twitter.com/67BevLhFp6— Alfreton Town FC (@AlfretonTownFC)January 25, 2020
"I know there are people out there who saw what happened and can answer those questions for us, so I would like to appeal to you directly - please do the right thing, not just for us but for Jordan's family."
Keith Brown, chief executive of Matlock Town, announced that the 25-year-old midfielder had died on Saturday evening.
The statement said: “His family and friends were with him at his bedside and we send our sincere condolences to them all at this very sad time.”
Matlock Town had earlier tweeted that their Saturday away game against Mickleover Sports had been postponed due to “tragic and unforeseen circumstances”.
His parent club, Alfreton Town, had also called off their Saturday fixture following the incident.
A statement from Alfreton Town following his death said the club are “saddened and heartbroken”.
Those with information are asked to call Nottinghamshire Police on 101, quoting incident number 78 of 25 January 2020.