North Queensland have confirmed playmaker Te Maire Martin will be sidelined indefinitely.
The 23-year-old will miss an unspecified amount of time, after scans revealed he has a small bleed on the brain.
The Cowboys' medical staff will continue to investigate the cause of the problem, with no clarity given over whether the injury is football-related.
Martin is scheduled to see a Townsville-based specialist later this week.
North Queensland will provide a further update when more information comes through.