James Bell, 31, was taken to hospital on Sunday night and died a short time later. He was found unconscious in a Dunfermline police station cell at about 7pm.
Fife Constabulary have asked officers from Lothian and Borders to find out how he died.
Inquiry into death after cell custody
POLICE have been called in to investigate the death of a man found unconscious in a cell in another force area.