“Both the boy and the girl that are suspected of involvement in the 16-year-old girl’s death have been detained,” Karin Solberg at Stockholm police told news agency TT.
The boy is being held on suspicion of murder and the girl for incitement with an alternative charge of complicity to commit murder.
The dead girl, who was born in 1993, was attending a party in the vicinity of where she was found, according to Aftonbladet.
Two friends discovered the girl at 12.40am and called the police.
The teenager then lay badly hurt on the ground at the scene and was rushed to hospital but it was confirmed that she had died from her injuries.
According to Karin Solberg the girl’s body showed signs of superficial injuries that indicated a crime but that she had not been subjected to sexual assault.
Police interviewed several young people and adults during the night and believe that they have established a motive for the crime.
During Sunday police will conduct a forensic examination of the area where the girl was found.