A police cordon is in place in Puckpool Park near Ryde today (Sunday).
Reports suggest an alleged assault took place last night.
Hampshire Constabulary has been approached for a comment.
Officers remain in attendance in the area.
*updated 10.32 am
A spokesperson for Hampshire Constabulary said:
'We were called at 1.26am to a report of a serious assault that had happened at Puckpool Park. A 16-year-old boy was found to have suffered stab wounds to his abdomen and was taken to hospital for treatment. His injuries are not life threatening.
'An 18-year-old man has been arrested on suspicion of causing grievous bodily harm with intent. He remains in police custody at this time.'