The Independent Office for Police Conduct’s (IOPC) said he was arrested shortly before 1 am in Exeter on 20 May and booked into custody at Torquay Police Station
A black man has died in British police custody after "becoming unresponsive" in a cell.
A watchdog is investigating the circumstances of Simeon Francis' death in Devon, reports The Independent.
The Independent Office for Police Conduct's (IOPC) said he was arrested shortly before 1 am in Exeter on 20 May and booked into custody at Torquay Police Station.
He was "found unresponsive in his cell" and an ambulance was called, but Mr Francis was pronounced dead at around 6pm on the same day.
A preliminary post-mortem examination did not identify a cause of death and further tests are to be carried out, while an inquest was opened and adjourned on Friday.
IOPC regional rirector Catrin Evans said: "Our thoughts are with Mr Francis' family and friends following his death. We will be keeping his family updated during the course of our independent investigation.
"Our investigators have begun gathering evidence and statements from officers. We are analysing a considerable amount of CCTV footage from the custody suite.
"We are looking at the level of care provided during the period of detention, including the frequency and adequacy of checks carried out."
The death was referred to the IOPC by Devon and Cornwall Police.