Jakarta. Embattled tax official Rafael Alun Trisambodo has kept a huge amount of cash in safe deposit boxes in a state-run bank, the anti-money laundering agency revealed on Friday.

Super-wealthy Rafael is facing an imminent dismissal from the Finance Ministry and criminal investigation by the Corruption Eradication Commission, or KPK, for underreporting his wealth and allegedly hiding unexplained assets.

In his recent filing to the KPK, Rafael claimed that he owns Rp 56 billion worth of personal wealth.

But the Financial Transaction Reports and Analysis Center, or PPATK, froze dozens of bank accounts belonging to Rafael and his family members over suspicious transactions in recent years worth Rp 500 billion ($32.4 million) – not proportionate with his lawfully acquired income.

In the latest development, the PPATK said Rafael also kept cash in the foreign denomination in safe deposit lockers.

"The amount is very huge -- in foreign currencies," PPATK Head Ivan Yustiavandana told reporters in Jakarta.

Ivan declined to go into details or name the state bank where Rafael kept his money.

The taxman came under the spotlight after his son became a criminal suspect for brutally assaulting a teenage boy who is now lying in a coma at the hospital.

The public inquiry into the son, Mario Dandy Satriyo, found that he often flaunted expensive cars and big motorbikes on social media posts, causing a growing suspicion about Rafael's personal wealth. 

Also on Friday, Mario was presented at the crime scene in Pesanggrahan, South Jakarta, to reenact the assault. His Rubicon Jeep, which he often flaunted in social media posts, was taken to the scene by the Jakarta Police.

The KPK said earlier this week a preliminary graft investigation against Rafael was underway.