Police discovered four bodies buried in a yard in Clocolan on Friday, in what could be a breakthrough in the investigation into the murder of four Pakistani nationals in the Free State.

Police spokesperson Captain Magda Muller said the discovery came after the arrest of a Pakistani national in Barberton on Tuesday.

"He appeared before the court in Barberton and the case was remanded to Bloemfontein for December 10."

The man's arrest brought the number of suspects in the investigation of the four missing Pakistanis to seven.

Six Pakistanis were arrested in Kestell and Pietermaritzburg shortly after the body of another Pakistani national, Zia Khan, was discovered in a shallow grave on a small holding in Bloemfontein on 18 March this year.

Muller said police discovered during the interrogations of the six suspects in the Khan incident that another four Pakistani nationals were missing.

"The same six suspects that were arrested for that murder (Khan) are possibly suspects in this case (the four bodies discovered in Clocolan)."

During the investigation police divers had searched every dam in the Clocolan area for evidence.

The four bodies were found buried at the plot where the six arrested Pakistanis resided in Clocolan.

The case against the six men was postponed to 6 January 2009 after the state successfully opposed their application for bail.