The pieces weighed 275lbs were seized at Hanoi's international airport Thursday
Images of the bust show large rhino horns and smaller pieces sitting on a table
The shipment was declared as non-taxable material to avoid any customs check
It was not immediately clear which African country the shipment originated from
A huge shipment of rhino horns has been confiscated by Vietnam's customs authority after they were concealed in plaster blocks on a plane.
The 55 pieces, which are worth up to £3.2million, weighed 125kg and were seized at Hanoi's international airport on Thursday.
Images of the bust show large rhino horns and smaller pieces sitting on a table as police used rods to break the casts apart.
A security source said: 'It took half a day to break them open.'