John Morrison found dead in Glasgow's Argyle street
A 50-year-old man who died after being found collapsed in Glasgow city centre on Saturday morning has been named as John Morrison.
Mr Morrison, from Milngavie, was found lying in Argyle Street just after 00:40. He died in hospital soon after.
Police said Mr Morrison, a former leader of East Dunbartonshire Council, was assaulted before his death.
But they said a post-mortem examination was inconclusive and the exact cause of death had yet to be established.
Police later said a 25-year-old man had been arrested in connection with an alleged assault on a 50-year-old man in Argyle Street.
A full report will be submitted to the Procurator Fiscal.
Officers had been conducting inquiries and gathering CCTV images of the scene, near the St Enoch shopping centre.
Mr Morrison was a Liberal Democrat councillor and the leader of the council in East Dunbartonshire from 2003-2007.
Lib Dem MP for the area, Jo Swinson, said: "This is shocking news and my heart goes out to John's partner, family and friends.
"John was a skillful debater and effective leader of East Dunbartonshire Council. He dedicated decades of his life to public service, both in elected politics and at Glasgow City Council. This is a tragic loss."
Former Lib Dem leader Charles Kennedy said: "This shockingly sad news sees the sudden passing of a great character and a memorable personality within the party.
"I first became friends with John at Glasgow University and was pleased when he succeeded me there as chairman of the Social Democrats in university union debating.
"He went on to make his mark both in the law and local government. It was a great pity that he was never able to deploy his talents at Holyrood."
Alistair Carmichael MP said: "John Morrison's sudden and tragic death has shocked all those who knew him.
"For me he was not just a political colleague but a close friend whom I had first met when we were both students at Glasgow University.
"My sadness today is lifted only by many happy memories I shall always have of the fun times we shared."
"My thoughts are with his partner David, his daughter Kirsty and the rest of his family."