A MACC source said the five office units and one residential property are located across the Klang Valley, reported Berita Harian.

The source added that the businessman who was arrested by MACC last Thursday had been remanded until Sunday. The suspect allegedly received bribes from a company after securing contracts from MBI.

The businessman was among the four individuals detained by the MACC last week in an investigation into a sand mining concession granted by an MBI subsidiary.

MACC chief commissioner Azam Baki previously said a prominent politician linked to the investigation would be called once certain information had been verified.

MACC seized around RM5 million from a safe house linked to the politician last Saturday, and on Monday, Azam said his officers also discovered two other safe houses – one of which had RM78,000 stashed and the other had S$74,000 (about RM243,000).

He said some of the money was used for investments in Singapore but did not provide further details.

Several investigation papers have been opened under the MACC Act 2009 and the Anti-Money Laundering and Anti-Terrorism Financing Act 2001.