The 26-year-old man who died at the Morton Hall immigration detention centre near Lincoln has been named as Rubel Ahmed from Bangladesh.
The man died on Friday night as detainees say he had been complaining of chest pains for more than an hour, but didn’t receive any help.
His family was then told that he had killed himself, The Guardian reported.
Ahmed’s cousin Ajmal Ali, who lives in Britain, said Ahmed was looking forward to seeing family members in a few days’ time.
Ahmed was pronounced dead at the scene on Friday night by the East Midlands Ambulance Service, who were called to Morton Hall at 11.30pm after reports that a man was not breathing.
As previously reported, following Ahmed’s death, disorder broke out at the immigration centre on Saturday, with some 300 inmates refusing to obey orders.
Staff at the centre have been withdrawn from the building to a “place of safety” and emergency services attended.
A riot team were also reported to have been in attendance with batons, shields and dogs.
No staff have been seriously injured in the incident. The situation was resolved by 10pm.
Immigration minister James Brokenshire said at the weekend that a full investigation into what happened at the immigration centre near Lincoln has been launched.