The youth who is believed to have repeatedly kicked a 10-week-old lamb at the Oropi School Calf Club has not been found.
Tauranga SPCA animal welfare inspector Jason Blair said it had not received any more information leading to a perpetrator.
"We are still in a position of waiting for additional information for us being able to take matters further," he said.
Oropi School principal Andrew King also said the school had no further information or leads at this stage.
The lamb's 8-year-old owner, Ella, said she saw the incident happen last Friday at the Oropi School Calf Club, just after the lamb, named Crystal, had won the Supreme Award at the event.