THE discovery of 11 dead kangaroos dumped in a bin at a car wash in Melbourne’s outer northeast has been labelled suspicious.

Five of the animals were found in a bin by the Warrandyte Carwash owners on Warrandyte-Heidelberg Rd, near Goldfields Shopping Centre about 2pm yesterday.

Another six kangaroos were found dead in the same bins last week, along with an arrow, 45cm in length.

Warrandyte Senior Sergeant Stewart Henderson said the deaths could not be put down to a road accident.

“We believe that there is something a little more suspicious,” he said.

“There is no apparent sign of road trauma from a car so we’re assuming guns or arrows.”

Parks Victoria area chief ranger Brendan Sullivan said it looked like the act of more than one person.

“The bodies were decomposing so it’s difficult to determine the exact cause,” he said.

Police are investigating whether the kangaroo deaths are linked to two kangaroos which were recently shot in the head and neck with arrows in Templestowe.

RELATED: Decapitated kangaroo dumped in Wonga Park horrifies community

media_camera Eleven dead kangaroos were found dumped in this bin.

Senior Constable Craig Lane said the car wash owner didn’t notify police until this week, thinking it had been a “one off” last week.

But when more kangaroos appeared he knew something was wrong.

“The arrow was by itself within the bin, with the kangaroos,” Sen-Constable Lane said.

“The kangaroos were all in plastic bags so it’s unknown if they were killed by arrows.”

Some of the animals were found in an industrial sized bin, while others were dumped in an overnight bin.

Warrandyte Carwash staff member Samantha O’Brien said it was a “disgusting act”.

“The smell has been putrid and has made it difficult for us to work,” she said.

“(Manningham) Council said it wasn’t their problem so we rang the police.”

Sen-Constable Lane said it appeared as though someone had killed the kangaroos and tried to hide their bodies.

“We will not be getting autopsies on them,” he said.

Anyone with information about the incident is urged to contact Crime Stoppers by phoning 1300 333 000.

RELATED: Desperate search for kangaroo shot through head with arrow in Templestowe