Lancashire police has referred itself to the Independent Office of Police Conduct following the death of Ribbleton mum-of-one Rosie Darbyshire.
The 27-year-old was found dead in Pope Lane, Ribbleton, on Thursday morning.
Ben Topping, believed to be Rosie's boyfriend, was today (Friday) charged with her murder.
A spokesman for Lancashire Police said: "Lancashire Constabulary have today referred the matter to the Independent Office of Police Conduct following some previous contact between Rosie and the Constabulary prior to her tragic death.
"This is standard practice in such circumstances. It would be inappropriate to go into further detail at this stage.
"Rosie’s family have been visited and made aware of the charge and the referral to the IOPC. They have family liaison officers providing them with support at this extremely difficult and sad time. Our thoughts remain with them."
"We are continuing our investigation and ask anyone with information about the incident to call 101 quoting log 433 of February 7th. Alternatively, you can report information to us online here https://mipp.police.uk/ by clicking on 'Operation Bond' and filling in a short form.
"We would like to thank the local community for their on-going support."
Police were called to the Pope Lane area of Moor Nook at around 2am on Thursday, February 7.
Emergency services attended and found Rosie's body on a pavement close to the junction with Village Drive.
Police say she had been the subject of a "brutal and sustained assault". A post-mortem concluded she had died as a result of serious head injuries.
Mr Topping had been remanded in custody and will appear at Preston Magistrates' Court tomorrow morning (Saturday).