A man being questioned after the sudden death of another man in Belfast was released without charge today.
Police were treating the death of the 40-year-old as suspicious but following a post-mortem today they are not treating it as murder.
A file is currently being prepared for the coroner.
Detectives were investigating reports that the dead man was involved in a row shortly before his death.
He died at his home at Benburb Street, south Belfast at around 9.30pm yesterday.