Jakarta. The Corruption Eradication Commission, or KPK, on Thursday summoned senior tax official Wahono Saputro for a second time this week to clarify his wealth report and gain information about suspicious business activities involving his wife.

Wahono is the fourth Finance Ministry official to come under KPK scrutiny over suspicious wealth in recent weeks after the commission also summoned another taxman and two customs officials.

He didn’t respond to questions from journalists as he arrived at the KPK building in South Jakarta earlier in the day.

“Our team has asked his clarified explanations on assets including houses, vehicles, and accessories that became viral on various social media platforms and were tied to Wahono or his family members,” KPK spokeswoman Ipi Maryati told reporters after the questioning.

Wahono, the head of the East Jakarta Tax Office, was asked to explain the sources of his assets and whether he acquired them while holding the public office, Ipi added.

Wahono’s latest filing to the KPK valued his personal assets at around Rp 14 billion ($907,000).

But the KPK is investigating reports of undeclared wealth, especially after it was learned that his wife has a share in two companies jointly owned with the wife of another embattled taxman, Rafael Alun Trisambodo, Ipi said without going into details.

Rafael, who is facing dismissal by the Finance Ministry for undeclared wealth, allegedly runs a tax consultant company in a serious conflict of interest with his official duty.

Anti-money laundering agency the Financial Transaction Reports and Analysis Center, or PPATK, said earlier the consultant firm was registered under nominees who include Rafael’s family members.

The KPK also has interrogated two customs officials Eko Darmanto and Andhi Pramono who got exposed for flaunting wealth on social media posts.

Eko has since been removed from his post as the head of the Yogyakarta Customs and Excise Office.