Commonwealth Games organisers have called team leaders from a competing country to an official meeting over an anti-doping breach of guidelines on Monday.
Commonwealth Games Federation chief executive David Grevemberg confirmed syringes were found at the athletes' village over the weekend but the event has a no-needles policy.
Grevemberg did not identify which team was involved and there was no official announcement from games officials by Monday evening Australian time.
"This is very much an ongoing investigation but there has been a clear breach to the no-needle policy," Grevemberg said. "These needles have been brought in and there was no approval for them to be there."
For the Games, medical practitioners or athletes with a condition requiring auto-injecting such as diabetes need prior approval to take needles into the village.
Gold Coast 2018 chairman Peter Beattie said the situation was "very unhelpful" just two days ahead of the opening ceremony.
