Maputo police have confirmed that 12 rhino horns have gone missing from the haul made on 12 May when 65 rhino horns and 340 elephant tusks were seized.
Six Mozambicans have been arrested. The haul is under surveillance and it is not yet known how the horns were stolen. The Guardian has estimated that they are worth £700,000.
Environmentalists had advised that the illegal goods should be burnt in order to stop the possibility of theft.
It is thought that the rhino horns were from South Africa and were on their way to the Far East, transiting through Mozambique and then possibly Kenya.
Rhino carcass photo cedit: Lowveld Trust, http://lowveldrhinotrust.org/