Kangaroos winger Josh Mansour has been ruled out of the remainder of the Four Nations with a knee injury.

Mansour ruled out of Four Nations

Kangaroos winger Josh Mansour has been ruled out for the remainder of the Four Nations tournament after suffering a knee injury at training on Wednesday.

Scans on Wednesday night confirmed Mansour had suffered an ACL injury.

"It's obviously shattering news for Josh," Kangaroos Coach Mal Meninga said. "He has been a popular member of the squad and was excellent for us against Scotland last Friday."

Kangaroos medical staff will work with Penrith Panthers on the best treatment options for Mansour.