Leonne Weeks, aged 16, was stabbed to death on Monday night.
Her body was found slumped on a pathway, off Lordens Hill, Dinnington, Rotherham, by members of the public.
A post-mortem examination carried out on Tuesday found that Leonne died as a result of multiple stab wounds.
Remembering 'beautiful' and 'amazing' Blake and Tristan Barrass three years on from tragic Sheffield brothers' funeral
EuroMillions: Mystery winner from South Yorkshire has won £79,242.50 on The National Lottery
Sheffield Council employees sacked as fraud increases including theft and excessive internet use during work
Power cut Sheffield: Hundreds of homes in Hillfoot area without power ahead of 28C heatwave today
Sheffield sexual assault: Girl, 13, victim of 'serious' sexual assault in Chapeltown
An 18-year-old Dinnington man was arrested on suspicion of murder on the night the body was found and a 26-year-old woman was arrested the following night on suspicion of assisting an offender.
Anyone with information should call South Yorkshire Police on 101.