Police in Thailand say they are looking for more suspects in a case involving people who allegedly claimed connections to the country's royal palace in order to enrich themselves.

National Police Chief Chakthip Chaijinda said Wednesday that more people than the three already detained are expected to be arrested in the case, which focuses on sponsorship of mass biking events arranged to honor the country's king and queen.

A senior police officer, a prominent fortune-teller and his assistant were arrested earlier this month and charged with lese majeste — insulting the monarchy — for allegedly seeking kickbacks and other benefits in connection to the events. The police officer, Maj. Prakrom Warunprapa, allegedly hanged himself last week while in military custody.