The Police Investigations & Review Commissioner is investigating the death of a 32-year-old man at St Leonard's Police Station in Edinburgh.
A spokesperson for the PIRC's investigations team said:
"We are investigating the death in custody of a 32-year-old man at St Leonard's Police Station in Edinburgh on 11 December 2018.
"The investigation will focus on the circumstances leading up to the man's death.
"The incident was referred to the PIRC by the Crown Office and Procurator Fiscal Service (COPFS) and a report will be submitted to them in due course."