Though police are investigating whether it was a case of accidental firing or intentional, they booked the 16-year-old accused for murder under section 302 of IPC and Arms Act, they said.
"Whether the death happened due to accidental firing or intentional is under investigation," a police officer said, adding that the accused was untraceable since the incident happened.
The incident occurred on the outskirts of Tirumalapur in Kulkarcherla block where a group of three boys went for hunting.
According to police, the accused was carrying a country- made weapon that he brought from his home.
The uncle of the deceased alleged in his complaint that his nephew was shot dead owing to previous "rivalry" with the family of the accused.
Kulkarcherla Police is also investigating how and from where the juvenile's family procured the country-made weapon.