A camper who witnessed a number of wombats being killed at Kangaroo Valley at the weekend claims he saw a group of men drinking heavily at the camp ground before one of the men got into a vehicle and mowed down the animals.

Police say at least 10 wombats were believed to have been deliberately killed over the weekend at the Bendeela Camping Ground, on the banks of the Kangaroo River, about 20 kilometres north of Nowra. Four of the wombats were feeding mothers, and one joey was found alive in its mother's pouch.

The baby wombat that survived when 10 others were run over. Credit:Wildlife Rescue South Coast

Witnesses told police they saw a white four-wheel-drive travelling around the camp ground on Friday night and early on Saturday, before campers discovered the bodies of eight wombats on Saturday morning.

Police are investigating if a number of wombats were also killed on Saturday night at the same camp ground, after the bodies of two more animals were discovered on Sunday morning.