Officers were called to bushland off Wilton Park Road in Wilton at about 7:25 a.m. local time on Saturday (2025 GMT on Friday) after the boy's body was found, Xinhua news agency reported.
Following a public appeal for information, a 32-year-old man was arrested after presenting himself at a police station shortly after 4:00 p.m. local time (0500 GMT) Saturday. He has now been charged with murder.
Detectives will allege in court the man stabbed the teen during a physical altercation, according to the statement.