Officers had been referred to as simply after 12.40am on Sunday to a home on Leinster Street and located a girl within the rear backyard of the property with accidents to her physique in step with gunshot wounds, the power stated.
Medical therapy was administered on the scene, however the lady was taken to hospital the place she was later pronounced lifeless.
Whereas the lady has not but been formally recognized, her subsequent of kin have been knowledgeable and are being supported by specifically educated officers.
Detectives have launched a homicide investigation with inquiries being carried out within the native space, and a autopsy examination is because of happen to verify the reason for demise.
Detective Chief Superintendent Mark Kameen stated: “This clearly was a really surprising incident which has led to the demise of a younger lady.
“I perceive how horrifying incidents like this will appear to extraordinary members of the general public and within the coming hours and days we shall be talking to individuals residing within the native and wider neighborhood to reassure them of the continuing work we’re doing to search out the individual or individuals accountable.
“Gun crime has no place on the streets of Merseyside and we’ll depart no stone unturned to carry these accountable to justice.
“An investigation is underneath method and a variety of traces of inquiry are at present being investigated.
“The neighborhood, as all the time, are our eyes and ears and we all know that there could also be individuals residing regionally who noticed or heard one thing within the early hours which can show to be important to our investigation.
“I might urge these individuals to please come ahead and inform us what they know. In the event you stay or work regionally and have personal CCTV or a Ring doorbell please examine it to see if it captured something which can help us.
“Equally I might ask taxi and supply drivers in the event that they had been driving within the space to examine their dashcam footage. We’re notably eager to search out anybody who noticed a car being pushed erratically within the space round Prescot Street.
“Data and video footage might be shared immediately with the investigation workforce by way of the police public portal – Public Portal (mipp.police.uk).
“It’s also possible to contact us by way of social media @MerPolCC or name Crimestoppers anonymously on 0800 555 111 quoting reference 22000615873.”