A murder inquiry has been launched following the death of an inmate at a Scots prison.
Darren Brownlie, 47, died at HMP Low Moss in East Dunbartonshire on Monday.
Four men were arrested on suspicion of assault and have since been released.
Police launched the murder probe following Mr Brownlie’s post-mortem.
A force spokesperson said: “Police Scotland was made aware of the death of a 47-year-old man within HMP Low Moss on Monday, January 6.
“Following a post-mortem examination, the death is being treated as suspicious and a murder inquiry has been launched.
“The 47-year-old man can be named as Darren Brownlie and his family have been informed.
“A report will be submitted to the Procurator Fiscal.
“Four men have been arrested on suspicion of assault and have been released pending further enquiries.”