Newcastle are the latest NRL club to confirm they’ve been told they are referred to in the Australian Crime Commission investigation into performance-enhancing drugs in professional sport.

The Knights were contacted by the NRL about the matter on Monday but say they have no further information or details on how they are involved.

“Our club will cooperate with any official enquiry,” said chief executive Matt Gidley.

“We maintain full confidence under the management of (coach) Wayne Bennett.

“Until we receive further information from the NRL and/or ASADA, there is nothing further we can add.”

Penrith, Canberra and North Queensland are the other clubs to so far confirm they’ve been contacted by the NRL.