The Department of Special Investigation (DSI) is working with the US to try to get fugitive former monk Luang Pu Nen Kham to stand trial in Thailand.
Luang Pu Nen Kham, who goes by the name Wirapol Sukphol, 35, is believed to be hiding in the US.
Pol Lt Col Phong-in Intrakhao, the commander of the DSI's National Security Bureau, said Monday he has asked the Crime Suppression Division to prepare briefs to file five charges - both civil and criminal - against Mr Wirapol.
Mr Wirapol already faces two civil charges including money laundering and deceiving people by making false claims about possessing supernatural powers.
The criminal charges Mr Wirapol faces include having sex with a minor, abduction of a child and violating Thailand's Computer Crime Act by posting deceitful information.
Because of all the charges, the former monk was defrocked in absentia by senior monks. The DSI has also filed several charges against him including manslaughter, false advertising, tax evasion, drug taking, making false claims about receiving a doctorate degree, and money laundering.
The decision to work with authorities in the US was made after a photo was recently posted showing Mr Wirapol acting like a monk, wearing a yellow-saffron robe, sitting on a table among followers and Thai Buddhists.
It was posted on a website and circulated online last week.
The website said that he has been living in the US.
Pol Lt Col Phong-in said Mr Wirapol's passport has been revoked, but he does not know why the former monk is still staying in the US.
Mr Wirapol fled from Thailand last year and he was reportedly in the US.
He was also reported to have taken refuge in France for a while.
Luang Pu Nen Kham gained a large amount of media attention following video footage of him travelling on a luxury private jet. Last year in July, the former DSI chief called on representatives from five state agencies to discuss ways to bring him to justice.
The accusations of his lavish, immoral lifestyle started to spread widely.
Luang Pu Nen Kham reportedly carried an expensive Louis Vuitton bag, wore brand-name sunglasses and owned a private jet.
He also reportedly owned more than 100 luxury cars and a large number of plots of land.