"The five were summoned as witnesses for the suspect, identified as RW, involved in a money laundering case," Ali Fikri, KPK’s acting spokesman, stated here on Thursday.
Two of the five witnesses, identified as Amrul Indra and Dharma Setyawan from a private company, were questioned at the KPK building.
The questioning of three other witnesses took place at the Samarinda City Police Building in East Kalimantan. The trio were PT Bara Kumala Sakti President Director Didi Marsono, President Director of PT Bara Kumala Sakti for the 2008-2012 period Hermanto Cigot, and PT Alam Jaya Bara Pratama shareholder Trias Slamet P.
The anti-graft agency is in the process of investigating RW as a suspect in the money laundering case.
On January 16, 2018, the KPK had named RW and PT Media Bangun Bersama commissioner, identified by his initials as K, as suspects in the case over receiving project fees, licensing fees, and other fees pertaining to the auction of goods and services.
RW and K are believed to have received Rp436 billion in the corruption case.
They had allegedly spent the money on motor vehicles under the names of other people, land, and in other form.
K is a former member of the Kutai Kartanegara city legislative assembly and a member of RW's campaign team during the Kutai Kartanegara district head election.
The Jakarta Corruption Court sentenced RW to 10 years' imprisonment on July 6, 2018, for receiving gratification worth Rp110.7 billion and bribery amounting to Rp6 billion from permit applicants and project partners.
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