Police investigating the sidesplitting of 16-year-old Brianna Ghey person said they are present considering whether it could person been a hatred crime.
The schoolgirl was recovered lying with stab wounds connected a way successful Linear Park successful Culcheth, Cheshire, connected Saturday.
Police person been granted a 30-hour hold to question a lad and girl, some aged 15, who person been arrested connected suspicion of murder.
They said each lines of enquiry were "being explored", including hatred crime.
Brianna was a transgender miss but Cheshire Police detectives antecedently said determination was nary grounds to suggest the sidesplitting was "hate related".
They said a post-mortem introspection was planned and officers were inactive searching for the limb used. They are besides trying to found a motive for the attack.
Brianna's household earlier paid tribute to the "much loved daughter, granddaughter, and babe sister", and said her decease had near a "massive hole".
Candle-lit vigils are to beryllium held crossed the UK, with events owed to beryllium held this evening successful Liverpool and Bristol.
Events - organised by members of the transgender assemblage and supporters - are besides planned successful the coming days successful cities including Manchester, Glasgow, Belfast and York.