It is understood that the aircraft did not fulfill aviation clearance before landing.

Brian Beti reports from Munda that the plane, destined for Bougainville, had to stop over at Munda airport to refuel when it was apprehended.

Mr Beti says, Police arrested two expatriate men on board and grounded the plane for investigations and proper clearance.

SIBC News understands that immigration officials traveled to Munda this morning to assist Police in its investigation.