The body of the women was found earlier this morning after the fire in Priory Road.
Enquiries into how the fire started are ongoing with colleagues from Greater Manchester Fire and Rescue Service and the woman’s next of kin have been informed.
Anyone with information is encouraged to come forward.
GMP’s Detective Chief Inspector Gwynn Dodd, said: “It’s extremely sad that we’ve had to inform someone’s family that their loved one has died this morning – our thoughts and specialist support remain with them as they deal with the tragic news.
“It is still very early stages for the investigation but we’re acting quickly with our fire service colleagues to find out exactly what has happened.
“I want to encourage anyone who saw something or anyone who has information to contact us at their earliest opportunity.”
Anyone with information should contact police on 101 quoting reference number 634 of 28/01/18 or the independent charity Crimestoppers, anonymously, on 0800 555 111.