Jakarta. The Corruption Eradication Commission, or KPK, has frozen bank accounts registered to graft suspect Setya Novanto and his wife and two children as a probe into the embezzlement of funds surrounding the procurement of electronic identity cards, or e-KTP, ratchets up.

Non-active Golkar chairman Setya, his wife Deisti Tagor, son Reza Herwindo and daughter Dwina Michaela all had their bank accounts blocked, while local companies Murakabi Sejahtera and Mondialindo Graha Perdana are being investigated as well, KPK spokesman Febri Dinsyah said on Wednesday (29/11).

"It is part of the investigation process into the e-KTP case," Febri said as quoted by Suara Pembaruan.

According to the country's antigraft law, KPK is allowed to block bank accounts associated with suspects under investigation.

Last week, the Immigration Office issued a six-month travel ban on Deisti, preventing her from traveling abroad.

Deisti was questioned by KPK officials on Tuesday in relation to the ongoing investigation into her husband's role in embezzling funds allocated to the e-KTP project.

The Rp 5.9 trillion ($436 million) project resulted in a total of Rp 2.3 trillion in state losses. Setya is accused of embezzling Rp 574 billion from the project.

Antigraft investigators will investigate both Murakabi and Mondialindo and individuals who sit on the companies' executive and commissioner boards, Febri said.

The House Speaker’s daughter Dwina serves as a commissioner of Murakabi Sejahtera, which was a participant of e-KTP procurement tender issued by the Ministry of Home Affairs. Setya’s nephew, Irvanto Hendra Pambudi, or Irvan, also works at the company.

Meanwhile, Setya’s son Rheza holds a 30 percent share in Mondialindo Graha Perdana, and his wife, Deisti, has a 50 percent share in the company. Mondialindo is the parent company of Murakabi.

Some reports suggest that Setya's family members have sold their stakes in both companies since news of the scandal broke.

KPK previously summoned Dwina and Rheza as witnesses in relation to the case, but neither has yet to meet with investigators.

The antigraft agency is considering taking further action if Setya’s children continue to evade KPK summonses, commissioner Basaria Panjaitan said.

"We will try the normal way to summon them […] if they are overseas, we can put them on a wanted list," she explained.