The New Zealand Warriors have fresh injury concerns surrounding Kiwi international Tohu Harris, with the second-rower suffering a right knee injury in a training session during the week.

Harris was slated to return from a left knee injury on Saturday against the Dragons, but after injuring his right knee in the lead up to the game, the 26-year-old will now return home for minor surgery, and is out indefinitely.

The Warriors have not put a time frame on Harris' return from his right knee issue.