At around 4.20am on Saturday police were alerted by the North West Ambulance Service to a report of a man with suspected stab wounds on Union Street.
The man was taken to the hospital in a critical condition before he was pronounced dead on arrival.
While formal identification has not yet taken place, detectives believe the victim is a man in his 40s from Oldham.
Specially-trained officers have informed the man’s family and are working to support them at this devastating time.
Initial enquiries suggest that the victim was stabbed after an altercation with a man close to the Light of Bengal restaurant.
A man in his 30s was located and detained to be questioned in custody on suspicion of murder – where he remains.
A large cordon remains in place on Union Street as extensive and thorough enquiries continue at pace and – while officers are working to minimise travel disruption through the town.
Anyone with information is urged to contact police via the LiveChat function on the Greater Manchester Police website, or by calling 101 quoting incident 501 of 28/05/2022.
Detective Superintendent Simon Hurst said: “We have a dedicated team of detectives working at pace following this fatal stabbing in the early hours of today, and we’re doing all we can to support the man’s family at this awful time and ensure that they get the justice they absolutely deserve.
“We’ve already spoken to a large number of witnesses who were in the town overnight, and we’re keen to ensure that we speak to everyone possible who may have seen something of significance in the moments before and after this devastating incident”.
Details can be passed anonymously to the independent charity Crimestoppers on 0800 555 111.
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