Police are considering animal cruelty charges after a group of teenagers appeared to force a kitten to inhale the contents of a makeshift bong.
A photo of the incident, posted to Facebook by a 14-year-old Nelson boy, shows a group of teenagers holding the kitten's mouth over a plastic bottle which appears to have been converted into a smoking device.
Nelson police spokeswoman Barbara Dunn said an investigation was launched after members of the public alerted the Nelson police Facebook page on Monday.
The incident was believed to have happened several weeks ago.
Ms Dunn said police had spoken to two of the youths, who had denied cannabis was involved.