A Tigerair flight from Sydney to Cairns has been forced to make an emergency landing in Brisbane after reports of an “unusual odour” in the cabin.

The plane landed at Brisbane airport about 2.45pm.

Channel Seven reported three passengers had been affected. On the ground, paramedics reportedly assessed several passengers for minor symptoms associated with the fumes.

Firefighters were conducting tests to determine the cause of the fumes.

“In accordance with standard operating procedures, the Captain made the decision to divert to Brisbane as a precautionary measure after an unusual odour was detected in the front section of the cabin,” Tigerair said in a statement.

“The aircraft was met on arrival by emergency services as a precautionary measure and all passengers and crew are safely disembarking the aircraft at the gate.

“Engineers are currently investigating the potential cause. All customers will be re-accommodated on to alternative services as soon as possible.

“The safety and wellbeing of our customers and team members is always our highest priority.”