A 22-year-old man has been rushed to hospital with serious injuries after being stabbed in Dalmuir.
Police, who say the attack is being treated as attempted murder, were called to an incident that started outside a block of flats in Ottawa Crescent around 1.45am on Thursday.
According to police, there was a group of around 12 people outside the block and that the 22-year-old was then chased by another man from Ottawa Crescent towards the central reservation in Dumbarton Road, where he was stabbed.
The man was rushed to the Queen Elizabeth University Hospital in Glasgow, where he is in a serious but stable condition, said police.
Officers are appealing for witnesses.
The suspect was dressed all in black.
Detective Sergeant Bruce Fyfe, of Clydebank CID, said: "We are treating this as an attempted murder and we're appealing for anyone who witnessed this incident to contact us.
"The victim was wearing a red jacket and despite the time of the incident, the disturbance outside the flat might have attracted attention with other residents, as well as drivers on the A814.
"This type of violence shouldn't be tolerated in the community so we would encourage people with any information to let us know."
Anyone with information should contact Police Scotland on 101 quoting incident number 0154 of October 29, or anonymously via Crimestoppers on 0800 555 111.
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