The king of Swaziland, who has 14 wives, has sacked his justice minister after the politician was caught red-handed having sex with one of the women in the southern African kingdom, media reports here said.

King Mswati III, 42, an "enthusiastic practitioner" of polygamy and father to 23 children, was shown pictures by police of his minister Ndumiso Mamba hiding under the bed of his adulterous 12th wife, Nothando Dube.